Home / 28,045.82-38,702.85-15,299.12

Finding the Fourth Proportional to 28,045.82, 38,702.85 and 15,299.12

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Solution

The fourth proportional to 28,045.82, 38,702.85 and 15,299.12 is: 21,112.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.82 : 38,702.85 = 15,299.12 : x
  2. Step 2: Convert to fraction form
    28,045.82/38,702.85 = 15,299.12/x
  3. Step 3: Cross multiply
    28,045.82x = 38,702.85 × 15,299.12
  4. Step 4: Simplify right side
    28,045.82x = 592,119,546.49
  5. Step 5: Solve for x
    x = 592,119,546.49/28,045.82
  6. Step 6: Final answer
    x = 21,112.58

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.