Home / 28,456.04-39,271.56-15,882.68

Finding the Fourth Proportional to 28,456.04, 39,271.56 and 15,882.68

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Solution

The fourth proportional to 28,456.04, 39,271.56 and 15,882.68 is: 21,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.04 : 39,271.56 = 15,882.68 : x
  2. Step 2: Convert to fraction form
    28,456.04/39,271.56 = 15,882.68/x
  3. Step 3: Cross multiply
    28,456.04x = 39,271.56 × 15,882.68
  4. Step 4: Simplify right side
    28,456.04x = 623,737,620.58
  5. Step 5: Solve for x
    x = 623,737,620.58/28,456.04
  6. Step 6: Final answer
    x = 21,919.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.