Home / 19,287.47-28,930.89-6,139.65

Finding the Fourth Proportional to 19,287.47, 28,930.89 and 6,139.65

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Solution

The fourth proportional to 19,287.47, 28,930.89 and 6,139.65 is: 9,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.47 : 28,930.89 = 6,139.65 : x
  2. Step 2: Convert to fraction form
    19,287.47/28,930.89 = 6,139.65/x
  3. Step 3: Cross multiply
    19,287.47x = 28,930.89 × 6,139.65
  4. Step 4: Simplify right side
    19,287.47x = 177,625,538.79
  5. Step 5: Solve for x
    x = 177,625,538.79/19,287.47
  6. Step 6: Final answer
    x = 9,209.38

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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.