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Finding the Fourth Proportional to 27,752.72, 38,275.08 and 21,704.72

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Solution

The fourth proportional to 27,752.72, 38,275.08 and 21,704.72 is: 29,934.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,752.72 : 38,275.08 = 21,704.72 : x
  2. Step 2: Convert to fraction form
    27,752.72/38,275.08 = 21,704.72/x
  3. Step 3: Cross multiply
    27,752.72x = 38,275.08 × 21,704.72
  4. Step 4: Simplify right side
    27,752.72x = 830,749,894.38
  5. Step 5: Solve for x
    x = 830,749,894.38/27,752.72
  6. Step 6: Final answer
    x = 29,934.00

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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.