Home / 13,151.47-18,149.02-7,183.15

Finding the Fourth Proportional to 13,151.47, 18,149.02 and 7,183.15

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Solution

The fourth proportional to 13,151.47, 18,149.02 and 7,183.15 is: 9,912.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.47 : 18,149.02 = 7,183.15 : x
  2. Step 2: Convert to fraction form
    13,151.47/18,149.02 = 7,183.15/x
  3. Step 3: Cross multiply
    13,151.47x = 18,149.02 × 7,183.15
  4. Step 4: Simplify right side
    13,151.47x = 130,367,133.01
  5. Step 5: Solve for x
    x = 130,367,133.01/13,151.47
  6. Step 6: Final answer
    x = 9,912.74

Related Problems

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Half scale
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Double scale
Find fourth proportional to 13,152.47, 18,150.40 and 7,184.15
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.