Home / 31,102.50-42,927.08-18,354.90

Finding the Fourth Proportional to 31,102.50, 42,927.08 and 18,354.90

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Solution

The fourth proportional to 31,102.50, 42,927.08 and 18,354.90 is: 25,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.50 : 42,927.08 = 18,354.90 : x
  2. Step 2: Convert to fraction form
    31,102.50/42,927.08 = 18,354.90/x
  3. Step 3: Cross multiply
    31,102.50x = 42,927.08 × 18,354.90
  4. Step 4: Simplify right side
    31,102.50x = 787,922,168.92
  5. Step 5: Solve for x
    x = 787,922,168.92/31,102.50
  6. Step 6: Final answer
    x = 25,333.08

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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.