Home / 20,191.68-27,851.55-13,030.74

Finding the Fourth Proportional to 20,191.68, 27,851.55 and 13,030.74

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Solution

The fourth proportional to 20,191.68, 27,851.55 and 13,030.74 is: 17,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.68 : 27,851.55 = 13,030.74 : x
  2. Step 2: Convert to fraction form
    20,191.68/27,851.55 = 13,030.74/x
  3. Step 3: Cross multiply
    20,191.68x = 27,851.55 × 13,030.74
  4. Step 4: Simplify right side
    20,191.68x = 362,926,306.65
  5. Step 5: Solve for x
    x = 362,926,306.65/20,191.68
  6. Step 6: Final answer
    x = 17,974.05

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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.