Home / 20,566.40-28,381.60-11,134.96

Finding the Fourth Proportional to 20,566.40, 28,381.60 and 11,134.96

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Solution

The fourth proportional to 20,566.40, 28,381.60 and 11,134.96 is: 15,366.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.40 : 28,381.60 = 11,134.96 : x
  2. Step 2: Convert to fraction form
    20,566.40/28,381.60 = 11,134.96/x
  3. Step 3: Cross multiply
    20,566.40x = 28,381.60 × 11,134.96
  4. Step 4: Simplify right side
    20,566.40x = 316,027,980.74
  5. Step 5: Solve for x
    x = 316,027,980.74/20,566.40
  6. Step 6: Final answer
    x = 15,366.23

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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.