Home / 28,519.16-42,750.03-11,888.40

Finding the Fourth Proportional to 28,519.16, 42,750.03 and 11,888.40

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Solution

The fourth proportional to 28,519.16, 42,750.03 and 11,888.40 is: 17,820.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.16 : 42,750.03 = 11,888.40 : x
  2. Step 2: Convert to fraction form
    28,519.16/42,750.03 = 11,888.40/x
  3. Step 3: Cross multiply
    28,519.16x = 42,750.03 × 11,888.40
  4. Step 4: Simplify right side
    28,519.16x = 508,229,456.65
  5. Step 5: Solve for x
    x = 508,229,456.65/28,519.16
  6. Step 6: Final answer
    x = 17,820.63

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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.