Home / 30,711.15-42,368.27-22,218.30

Finding the Fourth Proportional to 30,711.15, 42,368.27 and 22,218.30

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Solution

The fourth proportional to 30,711.15, 42,368.27 and 22,218.30 is: 30,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711.15 : 42,368.27 = 22,218.30 : x
  2. Step 2: Convert to fraction form
    30,711.15/42,368.27 = 22,218.30/x
  3. Step 3: Cross multiply
    30,711.15x = 42,368.27 × 22,218.30
  4. Step 4: Simplify right side
    30,711.15x = 941,350,822.25
  5. Step 5: Solve for x
    x = 941,350,822.25/30,711.15
  6. Step 6: Final answer
    x = 30,651.76

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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.