Home / 18,853.19-28,279.35-9,490.69

Finding the Fourth Proportional to 18,853.19, 28,279.35 and 9,490.69

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Solution

The fourth proportional to 18,853.19, 28,279.35 and 9,490.69 is: 14,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.19 : 28,279.35 = 9,490.69 : x
  2. Step 2: Convert to fraction form
    18,853.19/28,279.35 = 9,490.69/x
  3. Step 3: Cross multiply
    18,853.19x = 28,279.35 × 9,490.69
  4. Step 4: Simplify right side
    18,853.19x = 268,390,512.05
  5. Step 5: Solve for x
    x = 268,390,512.05/18,853.19
  6. Step 6: Final answer
    x = 14,235.82

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Double scale
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Similar ratio
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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.