Home / 31,448.10-47,208.60-18,982.20

Finding the Fourth Proportional to 31,448.10, 47,208.60 and 18,982.20

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Solution

The fourth proportional to 31,448.10, 47,208.60 and 18,982.20 is: 28,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.10 : 47,208.60 = 18,982.20 : x
  2. Step 2: Convert to fraction form
    31,448.10/47,208.60 = 18,982.20/x
  3. Step 3: Cross multiply
    31,448.10x = 47,208.60 × 18,982.20
  4. Step 4: Simplify right side
    31,448.10x = 896,123,086.92
  5. Step 5: Solve for x
    x = 896,123,086.92/31,448.10
  6. Step 6: Final answer
    x = 28,495.30

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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.