Home / 19,391.40-29,077.38-8,292.78

Finding the Fourth Proportional to 19,391.40, 29,077.38 and 8,292.78

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Solution

The fourth proportional to 19,391.40, 29,077.38 and 8,292.78 is: 12,435.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.40 : 29,077.38 = 8,292.78 : x
  2. Step 2: Convert to fraction form
    19,391.40/29,077.38 = 8,292.78/x
  3. Step 3: Cross multiply
    19,391.40x = 29,077.38 × 8,292.78
  4. Step 4: Simplify right side
    19,391.40x = 241,132,315.32
  5. Step 5: Solve for x
    x = 241,132,315.32/19,391.40
  6. Step 6: Final answer
    x = 12,435.01

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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.