Home / 28,066.85-38,732.30-15,491.60

Finding the Fourth Proportional to 28,066.85, 38,732.30 and 15,491.60

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Solution

The fourth proportional to 28,066.85, 38,732.30 and 15,491.60 is: 21,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.85 : 38,732.30 = 15,491.60 : x
  2. Step 2: Convert to fraction form
    28,066.85/38,732.30 = 15,491.60/x
  3. Step 3: Cross multiply
    28,066.85x = 38,732.30 × 15,491.60
  4. Step 4: Simplify right side
    28,066.85x = 600,025,298.68
  5. Step 5: Solve for x
    x = 600,025,298.68/28,066.85
  6. Step 6: Final answer
    x = 21,378.43

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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.