Home / 12,219.69-18,326.10-4,721.52

Finding the Fourth Proportional to 12,219.69, 18,326.10 and 4,721.52

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Solution

The fourth proportional to 12,219.69, 18,326.10 and 4,721.52 is: 7,080.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.69 : 18,326.10 = 4,721.52 : x
  2. Step 2: Convert to fraction form
    12,219.69/18,326.10 = 4,721.52/x
  3. Step 3: Cross multiply
    12,219.69x = 18,326.10 × 4,721.52
  4. Step 4: Simplify right side
    12,219.69x = 86,527,047.67
  5. Step 5: Solve for x
    x = 86,527,047.67/12,219.69
  6. Step 6: Final answer
    x = 7,080.95

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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.