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Finding the Fourth Proportional to 13,705.52, 18,913.56 and 7,737.12

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Solution

The fourth proportional to 13,705.52, 18,913.56 and 7,737.12 is: 10,677.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.52 : 18,913.56 = 7,737.12 : x
  2. Step 2: Convert to fraction form
    13,705.52/18,913.56 = 7,737.12/x
  3. Step 3: Cross multiply
    13,705.52x = 18,913.56 × 7,737.12
  4. Step 4: Simplify right side
    13,705.52x = 146,336,483.35
  5. Step 5: Solve for x
    x = 146,336,483.35/13,705.52
  6. Step 6: Final answer
    x = 10,677.19

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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.