Home / 28,040.79-42,069.12-11,412.75

Finding the Fourth Proportional to 28,040.79, 42,069.12 and 11,412.75

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Solution

The fourth proportional to 28,040.79, 42,069.12 and 11,412.75 is: 17,122.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.79 : 42,069.12 = 11,412.75 : x
  2. Step 2: Convert to fraction form
    28,040.79/42,069.12 = 11,412.75/x
  3. Step 3: Cross multiply
    28,040.79x = 42,069.12 × 11,412.75
  4. Step 4: Simplify right side
    28,040.79x = 480,124,549.84
  5. Step 5: Solve for x
    x = 480,124,549.84/28,040.79
  6. Step 6: Final answer
    x = 17,122.36

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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.