Home / 20,069.62-27,666.56-15,281.21

Finding the Fourth Proportional to 20,069.62, 27,666.56 and 15,281.21

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Solution

The fourth proportional to 20,069.62, 27,666.56 and 15,281.21 is: 21,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.62 : 27,666.56 = 15,281.21 : x
  2. Step 2: Convert to fraction form
    20,069.62/27,666.56 = 15,281.21/x
  3. Step 3: Cross multiply
    20,069.62x = 27,666.56 × 15,281.21
  4. Step 4: Simplify right side
    20,069.62x = 422,778,620.71
  5. Step 5: Solve for x
    x = 422,778,620.71/20,069.62
  6. Step 6: Final answer
    x = 21,065.60

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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.