Home / 19,901.45-29,854.13-7,418.57

Finding the Fourth Proportional to 19,901.45, 29,854.13 and 7,418.57

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Solution

The fourth proportional to 19,901.45, 29,854.13 and 7,418.57 is: 11,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.45 : 29,854.13 = 7,418.57 : x
  2. Step 2: Convert to fraction form
    19,901.45/29,854.13 = 7,418.57/x
  3. Step 3: Cross multiply
    19,901.45x = 29,854.13 × 7,418.57
  4. Step 4: Simplify right side
    19,901.45x = 221,474,766.83
  5. Step 5: Solve for x
    x = 221,474,766.83/19,901.45
  6. Step 6: Final answer
    x = 11,128.57

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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.