Home / 38,491.40-57,756.30-21,864.20

Finding the Fourth Proportional to 38,491.40, 57,756.30 and 21,864.20

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Solution

The fourth proportional to 38,491.40, 57,756.30 and 21,864.20 is: 32,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,491.40 : 57,756.30 = 21,864.20 : x
  2. Step 2: Convert to fraction form
    38,491.40/57,756.30 = 21,864.20/x
  3. Step 3: Cross multiply
    38,491.40x = 57,756.30 × 21,864.20
  4. Step 4: Simplify right side
    38,491.40x = 1,262,795,294.46
  5. Step 5: Solve for x
    x = 1,262,795,294.46/38,491.40
  6. Step 6: Final answer
    x = 32,807.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.