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Finding the Fourth Proportional to 25,563.29, 38,293.88 and 20,307.20

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Solution

The fourth proportional to 25,563.29, 38,293.88 and 20,307.20 is: 30,420.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,563.29 : 38,293.88 = 20,307.20 : x
  2. Step 2: Convert to fraction form
    25,563.29/38,293.88 = 20,307.20/x
  3. Step 3: Cross multiply
    25,563.29x = 38,293.88 × 20,307.20
  4. Step 4: Simplify right side
    25,563.29x = 777,641,186.93
  5. Step 5: Solve for x
    x = 777,641,186.93/25,563.29
  6. Step 6: Final answer
    x = 30,420.24

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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.