Home / 28,189.88-42,285.53-9,470.58

Finding the Fourth Proportional to 28,189.88, 42,285.53 and 9,470.58

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Solution

The fourth proportional to 28,189.88, 42,285.53 and 9,470.58 is: 14,206.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.88 : 42,285.53 = 9,470.58 : x
  2. Step 2: Convert to fraction form
    28,189.88/42,285.53 = 9,470.58/x
  3. Step 3: Cross multiply
    28,189.88x = 42,285.53 × 9,470.58
  4. Step 4: Simplify right side
    28,189.88x = 400,468,494.71
  5. Step 5: Solve for x
    x = 400,468,494.71/28,189.88
  6. Step 6: Final answer
    x = 14,206.11

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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.