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Finding the Fourth Proportional to 13,366.65, 18,446.14 and 7,398.87

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Solution

The fourth proportional to 13,366.65, 18,446.14 and 7,398.87 is: 10,210.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.65 : 18,446.14 = 7,398.87 : x
  2. Step 2: Convert to fraction form
    13,366.65/18,446.14 = 7,398.87/x
  3. Step 3: Cross multiply
    13,366.65x = 18,446.14 × 7,398.87
  4. Step 4: Simplify right side
    13,366.65x = 136,480,614.89
  5. Step 5: Solve for x
    x = 136,480,614.89/13,366.65
  6. Step 6: Final answer
    x = 10,210.53

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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.