Home / 28,218.21-42,290.18-15,744.11

Finding the Fourth Proportional to 28,218.21, 42,290.18 and 15,744.11

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Solution

The fourth proportional to 28,218.21, 42,290.18 and 15,744.11 is: 23,595.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.21 : 42,290.18 = 15,744.11 : x
  2. Step 2: Convert to fraction form
    28,218.21/42,290.18 = 15,744.11/x
  3. Step 3: Cross multiply
    28,218.21x = 42,290.18 × 15,744.11
  4. Step 4: Simplify right side
    28,218.21x = 665,820,955.67
  5. Step 5: Solve for x
    x = 665,820,955.67/28,218.21
  6. Step 6: Final answer
    x = 23,595.44

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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.