Home / 19,868.12-29,802.18-7,391.30

Finding the Fourth Proportional to 19,868.12, 29,802.18 and 7,391.30

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Solution

The fourth proportional to 19,868.12, 29,802.18 and 7,391.30 is: 11,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.12 : 29,802.18 = 7,391.30 : x
  2. Step 2: Convert to fraction form
    19,868.12/29,802.18 = 7,391.30/x
  3. Step 3: Cross multiply
    19,868.12x = 29,802.18 × 7,391.30
  4. Step 4: Simplify right side
    19,868.12x = 220,276,853.03
  5. Step 5: Solve for x
    x = 220,276,853.03/19,868.12
  6. Step 6: Final answer
    x = 11,086.95

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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.