Home / 28,118.60-42,194.10-10,590.20

Finding the Fourth Proportional to 28,118.60, 42,194.10 and 10,590.20

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Solution

The fourth proportional to 28,118.60, 42,194.10 and 10,590.20 is: 15,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.60 : 42,194.10 = 10,590.20 : x
  2. Step 2: Convert to fraction form
    28,118.60/42,194.10 = 10,590.20/x
  3. Step 3: Cross multiply
    28,118.60x = 42,194.10 × 10,590.20
  4. Step 4: Simplify right side
    28,118.60x = 446,843,957.82
  5. Step 5: Solve for x
    x = 446,843,957.82/28,118.60
  6. Step 6: Final answer
    x = 15,891.40

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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.