Home / 19,290.39-28,937.66-6,139.69

Finding the Fourth Proportional to 19,290.39, 28,937.66 and 6,139.69

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Solution

The fourth proportional to 19,290.39, 28,937.66 and 6,139.69 is: 9,210.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.39 : 28,937.66 = 6,139.69 : x
  2. Step 2: Convert to fraction form
    19,290.39/28,937.66 = 6,139.69/x
  3. Step 3: Cross multiply
    19,290.39x = 28,937.66 × 6,139.69
  4. Step 4: Simplify right side
    19,290.39x = 177,668,086.34
  5. Step 5: Solve for x
    x = 177,668,086.34/19,290.39
  6. Step 6: Final answer
    x = 9,210.19

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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.