Home / 25,521.89-35,217.38-15,312.38

Finding the Fourth Proportional to 25,521.89, 35,217.38 and 15,312.38

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Solution

The fourth proportional to 25,521.89, 35,217.38 and 15,312.38 is: 21,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,521.89 : 35,217.38 = 15,312.38 : x
  2. Step 2: Convert to fraction form
    25,521.89/35,217.38 = 15,312.38/x
  3. Step 3: Cross multiply
    25,521.89x = 35,217.38 × 15,312.38
  4. Step 4: Simplify right side
    25,521.89x = 539,261,767.36
  5. Step 5: Solve for x
    x = 539,261,767.36/25,521.89
  6. Step 6: Final answer
    x = 21,129.39

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Half scale
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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.