Home / 20,605.50-28,424.64-12,541.59

Finding the Fourth Proportional to 20,605.50, 28,424.64 and 12,541.59

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Solution

The fourth proportional to 20,605.50, 28,424.64 and 12,541.59 is: 17,300.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.50 : 28,424.64 = 12,541.59 : x
  2. Step 2: Convert to fraction form
    20,605.50/28,424.64 = 12,541.59/x
  3. Step 3: Cross multiply
    20,605.50x = 28,424.64 × 12,541.59
  4. Step 4: Simplify right side
    20,605.50x = 356,490,180.78
  5. Step 5: Solve for x
    x = 356,490,180.78/20,605.50
  6. Step 6: Final answer
    x = 17,300.73

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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.