Home / 15,331.56-21,153.64-9,361.04

Finding the Fourth Proportional to 15,331.56, 21,153.64 and 9,361.04

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Solution

The fourth proportional to 15,331.56, 21,153.64 and 9,361.04 is: 12,915.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.56 : 21,153.64 = 9,361.04 : x
  2. Step 2: Convert to fraction form
    15,331.56/21,153.64 = 9,361.04/x
  3. Step 3: Cross multiply
    15,331.56x = 21,153.64 × 9,361.04
  4. Step 4: Simplify right side
    15,331.56x = 198,020,070.19
  5. Step 5: Solve for x
    x = 198,020,070.19/15,331.56
  6. Step 6: Final answer
    x = 12,915.85

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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.