Home / 28,363.05-42,544.58-21,000.15

Finding the Fourth Proportional to 28,363.05, 42,544.58 and 21,000.15

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Solution

The fourth proportional to 28,363.05, 42,544.58 and 21,000.15 is: 31,500.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.05 : 42,544.58 = 21,000.15 : x
  2. Step 2: Convert to fraction form
    28,363.05/42,544.58 = 21,000.15/x
  3. Step 3: Cross multiply
    28,363.05x = 42,544.58 × 21,000.15
  4. Step 4: Simplify right side
    28,363.05x = 893,442,456.69
  5. Step 5: Solve for x
    x = 893,442,456.69/28,363.05
  6. Step 6: Final answer
    x = 31,500.23

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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.