Home / 13,990.48-19,306.80-7,702.85

Finding the Fourth Proportional to 13,990.48, 19,306.80 and 7,702.85

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Solution

The fourth proportional to 13,990.48, 19,306.80 and 7,702.85 is: 10,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.48 : 19,306.80 = 7,702.85 : x
  2. Step 2: Convert to fraction form
    13,990.48/19,306.80 = 7,702.85/x
  3. Step 3: Cross multiply
    13,990.48x = 19,306.80 × 7,702.85
  4. Step 4: Simplify right side
    13,990.48x = 148,717,384.38
  5. Step 5: Solve for x
    x = 148,717,384.38/13,990.48
  6. Step 6: Final answer
    x = 10,629.90

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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.