Home / 38,427.18-53,029.41-21,431.45

Finding the Fourth Proportional to 38,427.18, 53,029.41 and 21,431.45

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Solution

The fourth proportional to 38,427.18, 53,029.41 and 21,431.45 is: 29,575.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427.18 : 53,029.41 = 21,431.45 : x
  2. Step 2: Convert to fraction form
    38,427.18/53,029.41 = 21,431.45/x
  3. Step 3: Cross multiply
    38,427.18x = 53,029.41 × 21,431.45
  4. Step 4: Simplify right side
    38,427.18x = 1,136,496,776.64
  5. Step 5: Solve for x
    x = 1,136,496,776.64/38,427.18
  6. Step 6: Final answer
    x = 29,575.34

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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.