Home / 28,082.18-42,122.47-11,438.10

Finding the Fourth Proportional to 28,082.18, 42,122.47 and 11,438.10

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Solution

The fourth proportional to 28,082.18, 42,122.47 and 11,438.10 is: 17,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.18 : 42,122.47 = 11,438.10 : x
  2. Step 2: Convert to fraction form
    28,082.18/42,122.47 = 11,438.10/x
  3. Step 3: Cross multiply
    28,082.18x = 42,122.47 × 11,438.10
  4. Step 4: Simplify right side
    28,082.18x = 481,800,995.51
  5. Step 5: Solve for x
    x = 481,800,995.51/28,082.18
  6. Step 6: Final answer
    x = 17,156.82

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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.