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Finding the Fourth Proportional to 28,527, 42,752.79 and 20,655.84

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Solution

The fourth proportional to 28,527, 42,752.79 and 20,655.84 is: 30,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,527 : 42,752.79 = 20,655.84 : x
  2. Step 2: Convert to fraction form
    28,527/42,752.79 = 20,655.84/x
  3. Step 3: Cross multiply
    28,527x = 42,752.79 × 20,655.84
  4. Step 4: Simplify right side
    28,527x = 883,094,789.79
  5. Step 5: Solve for x
    x = 883,094,789.79/28,527
  6. Step 6: Final answer
    x = 30,956.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.