Home / 31,489.50-47,186.64-18,995.64

Finding the Fourth Proportional to 31,489.50, 47,186.64 and 18,995.64

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Solution

The fourth proportional to 31,489.50, 47,186.64 and 18,995.64 is: 28,464.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,489.50 : 47,186.64 = 18,995.64 : x
  2. Step 2: Convert to fraction form
    31,489.50/47,186.64 = 18,995.64/x
  3. Step 3: Cross multiply
    31,489.50x = 47,186.64 × 18,995.64
  4. Step 4: Simplify right side
    31,489.50x = 896,340,426.25
  5. Step 5: Solve for x
    x = 896,340,426.25/31,489.50
  6. Step 6: Final answer
    x = 28,464.74

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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.