Home / 31,023.20-42,812.80-16,876.10

Finding the Fourth Proportional to 31,023.20, 42,812.80 and 16,876.10

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Solution

The fourth proportional to 31,023.20, 42,812.80 and 16,876.10 is: 23,289.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,023.20 : 42,812.80 = 16,876.10 : x
  2. Step 2: Convert to fraction form
    31,023.20/42,812.80 = 16,876.10/x
  3. Step 3: Cross multiply
    31,023.20x = 42,812.80 × 16,876.10
  4. Step 4: Simplify right side
    31,023.20x = 722,513,094.08
  5. Step 5: Solve for x
    x = 722,513,094.08/31,023.20
  6. Step 6: Final answer
    x = 23,289.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.