Home / 13,154.62-18,152.71-7,185.19

Finding the Fourth Proportional to 13,154.62, 18,152.71 and 7,185.19

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Solution

The fourth proportional to 13,154.62, 18,152.71 and 7,185.19 is: 9,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.62 : 18,152.71 = 7,185.19 : x
  2. Step 2: Convert to fraction form
    13,154.62/18,152.71 = 7,185.19/x
  3. Step 3: Cross multiply
    13,154.62x = 18,152.71 × 7,185.19
  4. Step 4: Simplify right side
    13,154.62x = 130,430,670.36
  5. Step 5: Solve for x
    x = 130,430,670.36/13,154.62
  6. Step 6: Final answer
    x = 9,915.20

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Half scale
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Double scale
Find fourth proportional to 13,155.62, 18,154.09 and 7,186.19
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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.