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Finding the Fourth Proportional to 38,309.95, 52,866.72 and 21,313.33

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Solution

The fourth proportional to 38,309.95, 52,866.72 and 21,313.33 is: 29,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,309.95 : 52,866.72 = 21,313.33 : x
  2. Step 2: Convert to fraction form
    38,309.95/52,866.72 = 21,313.33/x
  3. Step 3: Cross multiply
    38,309.95x = 52,866.72 × 21,313.33
  4. Step 4: Simplify right side
    38,309.95x = 1,126,765,849.38
  5. Step 5: Solve for x
    x = 1,126,765,849.38/38,309.95
  6. Step 6: Final answer
    x = 29,411.83

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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.