Home / 28,117.15-42,161.38-9,390.44

Finding the Fourth Proportional to 28,117.15, 42,161.38 and 9,390.44

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Solution

The fourth proportional to 28,117.15, 42,161.38 and 9,390.44 is: 14,080.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.15 : 42,161.38 = 9,390.44 : x
  2. Step 2: Convert to fraction form
    28,117.15/42,161.38 = 9,390.44/x
  3. Step 3: Cross multiply
    28,117.15x = 42,161.38 × 9,390.44
  4. Step 4: Simplify right side
    28,117.15x = 395,913,909.21
  5. Step 5: Solve for x
    x = 395,913,909.21/28,117.15
  6. Step 6: Final answer
    x = 14,080.87

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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.