Home / 15,501.18-21,391.18-8,787.43

Finding the Fourth Proportional to 15,501.18, 21,391.18 and 8,787.43

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Solution

The fourth proportional to 15,501.18, 21,391.18 and 8,787.43 is: 12,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.18 : 21,391.18 = 8,787.43 : x
  2. Step 2: Convert to fraction form
    15,501.18/21,391.18 = 8,787.43/x
  3. Step 3: Cross multiply
    15,501.18x = 21,391.18 × 8,787.43
  4. Step 4: Simplify right side
    15,501.18x = 187,973,496.87
  5. Step 5: Solve for x
    x = 187,973,496.87/15,501.18
  6. Step 6: Final answer
    x = 12,126.40

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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.