Home / 15,892.35-21,931.38-8,818.76

Finding the Fourth Proportional to 15,892.35, 21,931.38 and 8,818.76

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Solution

The fourth proportional to 15,892.35, 21,931.38 and 8,818.76 is: 12,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,892.35 : 21,931.38 = 8,818.76 : x
  2. Step 2: Convert to fraction form
    15,892.35/21,931.38 = 8,818.76/x
  3. Step 3: Cross multiply
    15,892.35x = 21,931.38 × 8,818.76
  4. Step 4: Simplify right side
    15,892.35x = 193,407,477.77
  5. Step 5: Solve for x
    x = 193,407,477.77/15,892.35
  6. Step 6: Final answer
    x = 12,169.85

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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.