Home / 15,123.58-20,867.31-10,279.98

Finding the Fourth Proportional to 15,123.58, 20,867.31 and 10,279.98

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Solution

The fourth proportional to 15,123.58, 20,867.31 and 10,279.98 is: 14,184.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.58 : 20,867.31 = 10,279.98 : x
  2. Step 2: Convert to fraction form
    15,123.58/20,867.31 = 10,279.98/x
  3. Step 3: Cross multiply
    15,123.58x = 20,867.31 × 10,279.98
  4. Step 4: Simplify right side
    15,123.58x = 214,515,529.45
  5. Step 5: Solve for x
    x = 214,515,529.45/15,123.58
  6. Step 6: Final answer
    x = 14,184.18

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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.