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Finding the Fourth Proportional to 18,312.08, 25,270.92 and 9,928.52

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Solution

The fourth proportional to 18,312.08, 25,270.92 and 9,928.52 is: 13,701.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.08 : 25,270.92 = 9,928.52 : x
  2. Step 2: Convert to fraction form
    18,312.08/25,270.92 = 9,928.52/x
  3. Step 3: Cross multiply
    18,312.08x = 25,270.92 × 9,928.52
  4. Step 4: Simplify right side
    18,312.08x = 250,902,834.64
  5. Step 5: Solve for x
    x = 250,902,834.64/18,312.08
  6. Step 6: Final answer
    x = 13,701.49

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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.