Home / 15,655.28-21,603.46-8,581.56

Finding the Fourth Proportional to 15,655.28, 21,603.46 and 8,581.56

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Solution

The fourth proportional to 15,655.28, 21,603.46 and 8,581.56 is: 11,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.28 : 21,603.46 = 8,581.56 : x
  2. Step 2: Convert to fraction form
    15,655.28/21,603.46 = 8,581.56/x
  3. Step 3: Cross multiply
    15,655.28x = 21,603.46 × 8,581.56
  4. Step 4: Simplify right side
    15,655.28x = 185,391,388.20
  5. Step 5: Solve for x
    x = 185,391,388.20/15,655.28
  6. Step 6: Final answer
    x = 11,842.10

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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.