Home / 28,116.96-42,161.28-9,390.48

Finding the Fourth Proportional to 28,116.96, 42,161.28 and 9,390.48

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Solution

The fourth proportional to 28,116.96, 42,161.28 and 9,390.48 is: 14,080.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.96 : 42,161.28 = 9,390.48 : x
  2. Step 2: Convert to fraction form
    28,116.96/42,161.28 = 9,390.48/x
  3. Step 3: Cross multiply
    28,116.96x = 42,161.28 × 9,390.48
  4. Step 4: Simplify right side
    28,116.96x = 395,914,656.61
  5. Step 5: Solve for x
    x = 395,914,656.61/28,116.96
  6. Step 6: Final answer
    x = 14,080.99

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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.