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Finding the Fourth Proportional to 18,913.92, 26,100.96 and 10,530.40

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Solution

The fourth proportional to 18,913.92, 26,100.96 and 10,530.40 is: 14,531.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.92 : 26,100.96 = 10,530.40 : x
  2. Step 2: Convert to fraction form
    18,913.92/26,100.96 = 10,530.40/x
  3. Step 3: Cross multiply
    18,913.92x = 26,100.96 × 10,530.40
  4. Step 4: Simplify right side
    18,913.92x = 274,853,549.18
  5. Step 5: Solve for x
    x = 274,853,549.18/18,913.92
  6. Step 6: Final answer
    x = 14,531.81

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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.