Home / 27,845.61-38,423.40-15,909.72

Finding the Fourth Proportional to 27,845.61, 38,423.40 and 15,909.72

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Solution

The fourth proportional to 27,845.61, 38,423.40 and 15,909.72 is: 21,953.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,845.61 : 38,423.40 = 15,909.72 : x
  2. Step 2: Convert to fraction form
    27,845.61/38,423.40 = 15,909.72/x
  3. Step 3: Cross multiply
    27,845.61x = 38,423.40 × 15,909.72
  4. Step 4: Simplify right side
    27,845.61x = 611,305,331.70
  5. Step 5: Solve for x
    x = 611,305,331.70/27,845.61
  6. Step 6: Final answer
    x = 21,953.39

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Half scale
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Double scale
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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.