Home / 20,501.31-28,276.11-15,466.35

Finding the Fourth Proportional to 20,501.31, 28,276.11 and 15,466.35

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Solution

The fourth proportional to 20,501.31, 28,276.11 and 15,466.35 is: 21,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.31 : 28,276.11 = 15,466.35 : x
  2. Step 2: Convert to fraction form
    20,501.31/28,276.11 = 15,466.35/x
  3. Step 3: Cross multiply
    20,501.31x = 28,276.11 × 15,466.35
  4. Step 4: Simplify right side
    20,501.31x = 437,328,213.90
  5. Step 5: Solve for x
    x = 437,328,213.90/20,501.31
  6. Step 6: Final answer
    x = 21,331.72

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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.