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Finding the Fourth Proportional to 15,428.88, 23,155.48 and 7,932.14

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Solution

The fourth proportional to 15,428.88, 23,155.48 and 7,932.14 is: 11,904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.88 : 23,155.48 = 7,932.14 : x
  2. Step 2: Convert to fraction form
    15,428.88/23,155.48 = 7,932.14/x
  3. Step 3: Cross multiply
    15,428.88x = 23,155.48 × 7,932.14
  4. Step 4: Simplify right side
    15,428.88x = 183,672,509.13
  5. Step 5: Solve for x
    x = 183,672,509.13/15,428.88
  6. Step 6: Final answer
    x = 11,904.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.