Home / 28,001.80-42,007.28-8,282.35

Finding the Fourth Proportional to 28,001.80, 42,007.28 and 8,282.35

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Solution

The fourth proportional to 28,001.80, 42,007.28 and 8,282.35 is: 12,424.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.80 : 42,007.28 = 8,282.35 : x
  2. Step 2: Convert to fraction form
    28,001.80/42,007.28 = 8,282.35/x
  3. Step 3: Cross multiply
    28,001.80x = 42,007.28 × 8,282.35
  4. Step 4: Simplify right side
    28,001.80x = 347,918,995.51
  5. Step 5: Solve for x
    x = 347,918,995.51/28,001.80
  6. Step 6: Final answer
    x = 12,424.88

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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.