Home / 19,938.87-27,517.21-10,987.98

Finding the Fourth Proportional to 19,938.87, 27,517.21 and 10,987.98

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Solution

The fourth proportional to 19,938.87, 27,517.21 and 10,987.98 is: 15,164.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.87 : 27,517.21 = 10,987.98 : x
  2. Step 2: Convert to fraction form
    19,938.87/27,517.21 = 10,987.98/x
  3. Step 3: Cross multiply
    19,938.87x = 27,517.21 × 10,987.98
  4. Step 4: Simplify right side
    19,938.87x = 302,358,525.67
  5. Step 5: Solve for x
    x = 302,358,525.67/19,938.87
  6. Step 6: Final answer
    x = 15,164.27

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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.