Home / 15,572.28-21,489.08-8,856.96

Finding the Fourth Proportional to 15,572.28, 21,489.08 and 8,856.96

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Solution

The fourth proportional to 15,572.28, 21,489.08 and 8,856.96 is: 12,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.28 : 21,489.08 = 8,856.96 : x
  2. Step 2: Convert to fraction form
    15,572.28/21,489.08 = 8,856.96/x
  3. Step 3: Cross multiply
    15,572.28x = 21,489.08 × 8,856.96
  4. Step 4: Simplify right side
    15,572.28x = 190,327,877.71
  5. Step 5: Solve for x
    x = 190,327,877.71/15,572.28
  6. Step 6: Final answer
    x = 12,222.22

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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.