Home / 38,631.96-53,317.08-21,642.66

Finding the Fourth Proportional to 38,631.96, 53,317.08 and 21,642.66

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Solution

The fourth proportional to 38,631.96, 53,317.08 and 21,642.66 is: 29,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631.96 : 53,317.08 = 21,642.66 : x
  2. Step 2: Convert to fraction form
    38,631.96/53,317.08 = 21,642.66/x
  3. Step 3: Cross multiply
    38,631.96x = 53,317.08 × 21,642.66
  4. Step 4: Simplify right side
    38,631.96x = 1,153,923,434.63
  5. Step 5: Solve for x
    x = 1,153,923,434.63/38,631.96
  6. Step 6: Final answer
    x = 29,869.66

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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.