Home / 38,428.20-53,029.86-21,432.96

Finding the Fourth Proportional to 38,428.20, 53,029.86 and 21,432.96

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Solution

The fourth proportional to 38,428.20, 53,029.86 and 21,432.96 is: 29,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,428.20 : 53,029.86 = 21,432.96 : x
  2. Step 2: Convert to fraction form
    38,428.20/53,029.86 = 21,432.96/x
  3. Step 3: Cross multiply
    38,428.20x = 53,029.86 × 21,432.96
  4. Step 4: Simplify right side
    38,428.20x = 1,136,586,868.19
  5. Step 5: Solve for x
    x = 1,136,586,868.19/38,428.20
  6. Step 6: Final answer
    x = 29,576.90

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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.