Home / 13,151.07-18,150.19-7,484.72

Finding the Fourth Proportional to 13,151.07, 18,150.19 and 7,484.72

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Solution

The fourth proportional to 13,151.07, 18,150.19 and 7,484.72 is: 10,329.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.07 : 18,150.19 = 7,484.72 : x
  2. Step 2: Convert to fraction form
    13,151.07/18,150.19 = 7,484.72/x
  3. Step 3: Cross multiply
    13,151.07x = 18,150.19 × 7,484.72
  4. Step 4: Simplify right side
    13,151.07x = 135,849,090.10
  5. Step 5: Solve for x
    x = 135,849,090.10/13,151.07
  6. Step 6: Final answer
    x = 10,329.89

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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.