Home / 18,631.04-27,964.92-13,686.80

Finding the Fourth Proportional to 18,631.04, 27,964.92 and 13,686.80

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Solution

The fourth proportional to 18,631.04, 27,964.92 and 13,686.80 is: 20,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.04 : 27,964.92 = 13,686.80 : x
  2. Step 2: Convert to fraction form
    18,631.04/27,964.92 = 13,686.80/x
  3. Step 3: Cross multiply
    18,631.04x = 27,964.92 × 13,686.80
  4. Step 4: Simplify right side
    18,631.04x = 382,750,267.06
  5. Step 5: Solve for x
    x = 382,750,267.06/18,631.04
  6. Step 6: Final answer
    x = 20,543.69

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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.