Home / 20,032.20-29,999.70-19,157.40

Finding the Fourth Proportional to 20,032.20, 29,999.70 and 19,157.40

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Solution

The fourth proportional to 20,032.20, 29,999.70 and 19,157.40 is: 28,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,032.20 : 29,999.70 = 19,157.40 : x
  2. Step 2: Convert to fraction form
    20,032.20/29,999.70 = 19,157.40/x
  3. Step 3: Cross multiply
    20,032.20x = 29,999.70 × 19,157.40
  4. Step 4: Simplify right side
    20,032.20x = 574,716,252.78
  5. Step 5: Solve for x
    x = 574,716,252.78/20,032.20
  6. Step 6: Final answer
    x = 28,689.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.