Home / 28,123.20-42,184.80-22,218.30

Finding the Fourth Proportional to 28,123.20, 42,184.80 and 22,218.30

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Solution

The fourth proportional to 28,123.20, 42,184.80 and 22,218.30 is: 33,327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.20 : 42,184.80 = 22,218.30 : x
  2. Step 2: Convert to fraction form
    28,123.20/42,184.80 = 22,218.30/x
  3. Step 3: Cross multiply
    28,123.20x = 42,184.80 × 22,218.30
  4. Step 4: Simplify right side
    28,123.20x = 937,274,541.84
  5. Step 5: Solve for x
    x = 937,274,541.84/28,123.20
  6. Step 6: Final answer
    x = 33,327.45

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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.