Home / 19,331.80-28,996.62-5,290.80

Finding the Fourth Proportional to 19,331.80, 28,996.62 and 5,290.80

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Solution

The fourth proportional to 19,331.80, 28,996.62 and 5,290.80 is: 7,935.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.80 : 28,996.62 = 5,290.80 : x
  2. Step 2: Convert to fraction form
    19,331.80/28,996.62 = 5,290.80/x
  3. Step 3: Cross multiply
    19,331.80x = 28,996.62 × 5,290.80
  4. Step 4: Simplify right side
    19,331.80x = 153,415,188.52
  5. Step 5: Solve for x
    x = 153,415,188.52/19,331.80
  6. Step 6: Final answer
    x = 7,935.90

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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.