Home / 15,915.33-21,955.68-9,538.88

Finding the Fourth Proportional to 15,915.33, 21,955.68 and 9,538.88

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Solution

The fourth proportional to 15,915.33, 21,955.68 and 9,538.88 is: 13,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.33 : 21,955.68 = 9,538.88 : x
  2. Step 2: Convert to fraction form
    15,915.33/21,955.68 = 9,538.88/x
  3. Step 3: Cross multiply
    15,915.33x = 21,955.68 × 9,538.88
  4. Step 4: Simplify right side
    15,915.33x = 209,432,487.06
  5. Step 5: Solve for x
    x = 209,432,487.06/15,915.33
  6. Step 6: Final answer
    x = 13,159.17

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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.