Home / 25,520.05-38,280.09-13,907.08

Finding the Fourth Proportional to 25,520.05, 38,280.09 and 13,907.08

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Solution

The fourth proportional to 25,520.05, 38,280.09 and 13,907.08 is: 20,860.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,520.05 : 38,280.09 = 13,907.08 : x
  2. Step 2: Convert to fraction form
    25,520.05/38,280.09 = 13,907.08/x
  3. Step 3: Cross multiply
    25,520.05x = 38,280.09 × 13,907.08
  4. Step 4: Simplify right side
    25,520.05x = 532,364,274.04
  5. Step 5: Solve for x
    x = 532,364,274.04/25,520.05
  6. Step 6: Final answer
    x = 20,860.63

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.