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Finding the Fourth Proportional to 27,943.88, 38,562.72 and 15,368.72

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Solution

The fourth proportional to 27,943.88, 38,562.72 and 15,368.72 is: 21,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,943.88 : 38,562.72 = 15,368.72 : x
  2. Step 2: Convert to fraction form
    27,943.88/38,562.72 = 15,368.72/x
  3. Step 3: Cross multiply
    27,943.88x = 38,562.72 × 15,368.72
  4. Step 4: Simplify right side
    27,943.88x = 592,659,646.12
  5. Step 5: Solve for x
    x = 592,659,646.12/27,943.88
  6. Step 6: Final answer
    x = 21,208.92

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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.