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Finding the Fourth Proportional to 14,989.54, 20,685.02 and 8,275.02

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Solution

The fourth proportional to 14,989.54, 20,685.02 and 8,275.02 is: 11,419.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,989.54 : 20,685.02 = 8,275.02 : x
  2. Step 2: Convert to fraction form
    14,989.54/20,685.02 = 8,275.02/x
  3. Step 3: Cross multiply
    14,989.54x = 20,685.02 × 8,275.02
  4. Step 4: Simplify right side
    14,989.54x = 171,169,026.60
  5. Step 5: Solve for x
    x = 171,169,026.60/14,989.54
  6. Step 6: Final answer
    x = 11,419.23

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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.