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Finding the Fourth Proportional to 14,689.77, 20,265.03 and 8,398.50

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Solution

The fourth proportional to 14,689.77, 20,265.03 and 8,398.50 is: 11,586.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.77 : 20,265.03 = 8,398.50 : x
  2. Step 2: Convert to fraction form
    14,689.77/20,265.03 = 8,398.50/x
  3. Step 3: Cross multiply
    14,689.77x = 20,265.03 × 8,398.50
  4. Step 4: Simplify right side
    14,689.77x = 170,195,854.46
  5. Step 5: Solve for x
    x = 170,195,854.46/14,689.77
  6. Step 6: Final answer
    x = 11,586.01

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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.