Home / 28,053.12-42,078.86-8,331.64

Finding the Fourth Proportional to 28,053.12, 42,078.86 and 8,331.64

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Solution

The fourth proportional to 28,053.12, 42,078.86 and 8,331.64 is: 12,497.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.12 : 42,078.86 = 8,331.64 : x
  2. Step 2: Convert to fraction form
    28,053.12/42,078.86 = 8,331.64/x
  3. Step 3: Cross multiply
    28,053.12x = 42,078.86 × 8,331.64
  4. Step 4: Simplify right side
    28,053.12x = 350,585,913.13
  5. Step 5: Solve for x
    x = 350,585,913.13/28,053.12
  6. Step 6: Final answer
    x = 12,497.22

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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.