Home / 13,764.52-20,541.29-12,288.28

Finding the Fourth Proportional to 13,764.52, 20,541.29 and 12,288.28

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Solution

The fourth proportional to 13,764.52, 20,541.29 and 12,288.28 is: 18,338.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.52 : 20,541.29 = 12,288.28 : x
  2. Step 2: Convert to fraction form
    13,764.52/20,541.29 = 12,288.28/x
  3. Step 3: Cross multiply
    13,764.52x = 20,541.29 × 12,288.28
  4. Step 4: Simplify right side
    13,764.52x = 252,417,123.08
  5. Step 5: Solve for x
    x = 252,417,123.08/13,764.52
  6. Step 6: Final answer
    x = 18,338.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.