Home / 37,997.40-52,434.78-21,000.77

Finding the Fourth Proportional to 37,997.40, 52,434.78 and 21,000.77

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Solution

The fourth proportional to 37,997.40, 52,434.78 and 21,000.77 is: 28,980.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,997.40 : 52,434.78 = 21,000.77 : x
  2. Step 2: Convert to fraction form
    37,997.40/52,434.78 = 21,000.77/x
  3. Step 3: Cross multiply
    37,997.40x = 52,434.78 × 21,000.77
  4. Step 4: Simplify right side
    37,997.40x = 1,101,170,492.61
  5. Step 5: Solve for x
    x = 1,101,170,492.61/37,997.40
  6. Step 6: Final answer
    x = 28,980.15

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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.