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Finding the Fourth Proportional to 27,804.72, 38,373.28 and 15,869.86

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Solution

The fourth proportional to 27,804.72, 38,373.28 and 15,869.86 is: 21,901.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,804.72 : 38,373.28 = 15,869.86 : x
  2. Step 2: Convert to fraction form
    27,804.72/38,373.28 = 15,869.86/x
  3. Step 3: Cross multiply
    27,804.72x = 38,373.28 × 15,869.86
  4. Step 4: Simplify right side
    27,804.72x = 608,978,581.34
  5. Step 5: Solve for x
    x = 608,978,581.34/27,804.72
  6. Step 6: Final answer
    x = 21,901.99

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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.