Home / 30,287.40-45,458.10-17,791.80

Finding the Fourth Proportional to 30,287.40, 45,458.10 and 17,791.80

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Solution

The fourth proportional to 30,287.40, 45,458.10 and 17,791.80 is: 26,703.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.40 : 45,458.10 = 17,791.80 : x
  2. Step 2: Convert to fraction form
    30,287.40/45,458.10 = 17,791.80/x
  3. Step 3: Cross multiply
    30,287.40x = 45,458.10 × 17,791.80
  4. Step 4: Simplify right side
    30,287.40x = 808,781,423.58
  5. Step 5: Solve for x
    x = 808,781,423.58/30,287.40
  6. Step 6: Final answer
    x = 26,703.56

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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.