Home / 13,990.18-19,306.41-7,702.55

Finding the Fourth Proportional to 13,990.18, 19,306.41 and 7,702.55

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Solution

The fourth proportional to 13,990.18, 19,306.41 and 7,702.55 is: 10,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.18 : 19,306.41 = 7,702.55 : x
  2. Step 2: Convert to fraction form
    13,990.18/19,306.41 = 7,702.55/x
  3. Step 3: Cross multiply
    13,990.18x = 19,306.41 × 7,702.55
  4. Step 4: Simplify right side
    13,990.18x = 148,708,593.22
  5. Step 5: Solve for x
    x = 148,708,593.22/13,990.18
  6. Step 6: Final answer
    x = 10,629.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.