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Finding the Fourth Proportional to 38,526, 53,166.48 and 21,759.12

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Solution

The fourth proportional to 38,526, 53,166.48 and 21,759.12 is: 30,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,526 : 53,166.48 = 21,759.12 : x
  2. Step 2: Convert to fraction form
    38,526/53,166.48 = 21,759.12/x
  3. Step 3: Cross multiply
    38,526x = 53,166.48 × 21,759.12
  4. Step 4: Simplify right side
    38,526x = 1,156,855,818.30
  5. Step 5: Solve for x
    x = 1,156,855,818.30/38,526
  6. Step 6: Final answer
    x = 30,027.92

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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.