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Finding the Fourth Proportional to 21,248.70, 29,327.70 and 17,027.80

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Solution

The fourth proportional to 21,248.70, 29,327.70 and 17,027.80 is: 23,501.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.70 : 29,327.70 = 17,027.80 : x
  2. Step 2: Convert to fraction form
    21,248.70/29,327.70 = 17,027.80/x
  3. Step 3: Cross multiply
    21,248.70x = 29,327.70 × 17,027.80
  4. Step 4: Simplify right side
    21,248.70x = 499,386,210.06
  5. Step 5: Solve for x
    x = 499,386,210.06/21,248.70
  6. Step 6: Final answer
    x = 23,501.97

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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.