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Finding the Fourth Proportional to 14,686.71, 20,268.01 and 8,718.41

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Solution

The fourth proportional to 14,686.71, 20,268.01 and 8,718.41 is: 12,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,686.71 : 20,268.01 = 8,718.41 : x
  2. Step 2: Convert to fraction form
    14,686.71/20,268.01 = 8,718.41/x
  3. Step 3: Cross multiply
    14,686.71x = 20,268.01 × 8,718.41
  4. Step 4: Simplify right side
    14,686.71x = 176,704,697.93
  5. Step 5: Solve for x
    x = 176,704,697.93/14,686.71
  6. Step 6: Final answer
    x = 12,031.60

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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.