Home / 13,990.01-19,306.10-7,702.25

Finding the Fourth Proportional to 13,990.01, 19,306.10 and 7,702.25

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Solution

The fourth proportional to 13,990.01, 19,306.10 and 7,702.25 is: 10,629.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.01 : 19,306.10 = 7,702.25 : x
  2. Step 2: Convert to fraction form
    13,990.01/19,306.10 = 7,702.25/x
  3. Step 3: Cross multiply
    13,990.01x = 19,306.10 × 7,702.25
  4. Step 4: Simplify right side
    13,990.01x = 148,700,370.21
  5. Step 5: Solve for x
    x = 148,700,370.21/13,990.01
  6. Step 6: Final answer
    x = 10,629.04

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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.