Home / 15,909.70-21,957.13-9,104.35

Finding the Fourth Proportional to 15,909.70, 21,957.13 and 9,104.35

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Solution

The fourth proportional to 15,909.70, 21,957.13 and 9,104.35 is: 12,565.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.70 : 21,957.13 = 9,104.35 : x
  2. Step 2: Convert to fraction form
    15,909.70/21,957.13 = 9,104.35/x
  3. Step 3: Cross multiply
    15,909.70x = 21,957.13 × 9,104.35
  4. Step 4: Simplify right side
    15,909.70x = 199,905,342.96
  5. Step 5: Solve for x
    x = 199,905,342.96/15,909.70
  6. Step 6: Final answer
    x = 12,565.00

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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.