Home / 19,418.85-29,130.18-7,729.35

Finding the Fourth Proportional to 19,418.85, 29,130.18 and 7,729.35

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Solution

The fourth proportional to 19,418.85, 29,130.18 and 7,729.35 is: 11,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.85 : 29,130.18 = 7,729.35 : x
  2. Step 2: Convert to fraction form
    19,418.85/29,130.18 = 7,729.35/x
  3. Step 3: Cross multiply
    19,418.85x = 29,130.18 × 7,729.35
  4. Step 4: Simplify right side
    19,418.85x = 225,157,356.78
  5. Step 5: Solve for x
    x = 225,157,356.78/19,418.85
  6. Step 6: Final answer
    x = 11,594.78

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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.