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Finding the Fourth Proportional to 20,141.81, 27,799.02 and 16,779.30

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Solution

The fourth proportional to 20,141.81, 27,799.02 and 16,779.30 is: 23,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.81 : 27,799.02 = 16,779.30 : x
  2. Step 2: Convert to fraction form
    20,141.81/27,799.02 = 16,779.30/x
  3. Step 3: Cross multiply
    20,141.81x = 27,799.02 × 16,779.30
  4. Step 4: Simplify right side
    20,141.81x = 466,447,957.29
  5. Step 5: Solve for x
    x = 466,447,957.29/20,141.81
  6. Step 6: Final answer
    x = 23,158.20

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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.