Home / 15,855.40-23,766.90-9,278.20

Finding the Fourth Proportional to 15,855.40, 23,766.90 and 9,278.20

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Solution

The fourth proportional to 15,855.40, 23,766.90 and 9,278.20 is: 13,907.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855.40 : 23,766.90 = 9,278.20 : x
  2. Step 2: Convert to fraction form
    15,855.40/23,766.90 = 9,278.20/x
  3. Step 3: Cross multiply
    15,855.40x = 23,766.90 × 9,278.20
  4. Step 4: Simplify right side
    15,855.40x = 220,514,051.58
  5. Step 5: Solve for x
    x = 220,514,051.58/15,855.40
  6. Step 6: Final answer
    x = 13,907.82

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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.