Home / 10,931.43-15,084.84-6,215.61

Finding the Fourth Proportional to 10,931.43, 15,084.84 and 6,215.61

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Solution

The fourth proportional to 10,931.43, 15,084.84 and 6,215.61 is: 8,577.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.43 : 15,084.84 = 6,215.61 : x
  2. Step 2: Convert to fraction form
    10,931.43/15,084.84 = 6,215.61/x
  3. Step 3: Cross multiply
    10,931.43x = 15,084.84 × 6,215.61
  4. Step 4: Simplify right side
    10,931.43x = 93,761,482.35
  5. Step 5: Solve for x
    x = 93,761,482.35/10,931.43
  6. Step 6: Final answer
    x = 8,577.24

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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.