Home / 38,491.08-53,117.20-21,495.62

Finding the Fourth Proportional to 38,491.08, 53,117.20 and 21,495.62

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Solution

The fourth proportional to 38,491.08, 53,117.20 and 21,495.62 is: 29,663.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,491.08 : 53,117.20 = 21,495.62 : x
  2. Step 2: Convert to fraction form
    38,491.08/53,117.20 = 21,495.62/x
  3. Step 3: Cross multiply
    38,491.08x = 53,117.20 × 21,495.62
  4. Step 4: Simplify right side
    38,491.08x = 1,141,787,146.66
  5. Step 5: Solve for x
    x = 1,141,787,146.66/38,491.08
  6. Step 6: Final answer
    x = 29,663.68

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Half scale
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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.