Home / 28,012.25-38,657.72-15,437.81

Finding the Fourth Proportional to 28,012.25, 38,657.72 and 15,437.81

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Solution

The fourth proportional to 28,012.25, 38,657.72 and 15,437.81 is: 21,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.25 : 38,657.72 = 15,437.81 : x
  2. Step 2: Convert to fraction form
    28,012.25/38,657.72 = 15,437.81/x
  3. Step 3: Cross multiply
    28,012.25x = 38,657.72 × 15,437.81
  4. Step 4: Simplify right side
    28,012.25x = 596,790,459.20
  5. Step 5: Solve for x
    x = 596,790,459.20/28,012.25
  6. Step 6: Final answer
    x = 21,304.62

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Double scale
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Similar ratio
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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.