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Finding the Fourth Proportional to 21,025.62, 29,026.62 and 16,478.94

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Solution

The fourth proportional to 21,025.62, 29,026.62 and 16,478.94 is: 22,749.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.62 : 29,026.62 = 16,478.94 : x
  2. Step 2: Convert to fraction form
    21,025.62/29,026.62 = 16,478.94/x
  3. Step 3: Cross multiply
    21,025.62x = 29,026.62 × 16,478.94
  4. Step 4: Simplify right side
    21,025.62x = 478,327,929.38
  5. Step 5: Solve for x
    x = 478,327,929.38/21,025.62
  6. Step 6: Final answer
    x = 22,749.77

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Half scale
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Double scale
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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.