Home / 38,427.49-53,030.07-21,431.65

Finding the Fourth Proportional to 38,427.49, 53,030.07 and 21,431.65

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Solution

The fourth proportional to 38,427.49, 53,030.07 and 21,431.65 is: 29,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427.49 : 53,030.07 = 21,431.65 : x
  2. Step 2: Convert to fraction form
    38,427.49/53,030.07 = 21,431.65/x
  3. Step 3: Cross multiply
    38,427.49x = 53,030.07 × 21,431.65
  4. Step 4: Simplify right side
    38,427.49x = 1,136,521,899.72
  5. Step 5: Solve for x
    x = 1,136,521,899.72/38,427.49
  6. Step 6: Final answer
    x = 29,575.75

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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.