Home / 28,036.56-38,641.68-20,470.44

Finding the Fourth Proportional to 28,036.56, 38,641.68 and 20,470.44

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Solution

The fourth proportional to 28,036.56, 38,641.68 and 20,470.44 is: 28,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.56 : 38,641.68 = 20,470.44 : x
  2. Step 2: Convert to fraction form
    28,036.56/38,641.68 = 20,470.44/x
  3. Step 3: Cross multiply
    28,036.56x = 38,641.68 × 20,470.44
  4. Step 4: Simplify right side
    28,036.56x = 791,012,191.94
  5. Step 5: Solve for x
    x = 791,012,191.94/28,036.56
  6. Step 6: Final answer
    x = 28,213.60

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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.