Home / 15,956.39-22,020.29-8,787.05

Finding the Fourth Proportional to 15,956.39, 22,020.29 and 8,787.05

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Solution

The fourth proportional to 15,956.39, 22,020.29 and 8,787.05 is: 12,126.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,956.39 : 22,020.29 = 8,787.05 : x
  2. Step 2: Convert to fraction form
    15,956.39/22,020.29 = 8,787.05/x
  3. Step 3: Cross multiply
    15,956.39x = 22,020.29 × 8,787.05
  4. Step 4: Simplify right side
    15,956.39x = 193,493,389.24
  5. Step 5: Solve for x
    x = 193,493,389.24/15,956.39
  6. Step 6: Final answer
    x = 12,126.39

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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.