Home / 38,499.68-53,129.40-21,732.56

Finding the Fourth Proportional to 38,499.68, 53,129.40 and 21,732.56

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Solution

The fourth proportional to 38,499.68, 53,129.40 and 21,732.56 is: 29,990.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,499.68 : 53,129.40 = 21,732.56 : x
  2. Step 2: Convert to fraction form
    38,499.68/53,129.40 = 21,732.56/x
  3. Step 3: Cross multiply
    38,499.68x = 53,129.40 × 21,732.56
  4. Step 4: Simplify right side
    38,499.68x = 1,154,637,873.26
  5. Step 5: Solve for x
    x = 1,154,637,873.26/38,499.68
  6. Step 6: Final answer
    x = 29,990.84

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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.