Home / 38,320.90-52,878.12-21,320.62

Finding the Fourth Proportional to 38,320.90, 52,878.12 and 21,320.62

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Solution

The fourth proportional to 38,320.90, 52,878.12 and 21,320.62 is: 29,419.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,320.90 : 52,878.12 = 21,320.62 : x
  2. Step 2: Convert to fraction form
    38,320.90/52,878.12 = 21,320.62/x
  3. Step 3: Cross multiply
    38,320.90x = 52,878.12 × 21,320.62
  4. Step 4: Simplify right side
    38,320.90x = 1,127,394,090.69
  5. Step 5: Solve for x
    x = 1,127,394,090.69/38,320.90
  6. Step 6: Final answer
    x = 29,419.82

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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.