Home / 12,521.80-18,780.48-4,730.68

Finding the Fourth Proportional to 12,521.80, 18,780.48 and 4,730.68

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Solution

The fourth proportional to 12,521.80, 18,780.48 and 4,730.68 is: 7,095.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.80 : 18,780.48 = 4,730.68 : x
  2. Step 2: Convert to fraction form
    12,521.80/18,780.48 = 4,730.68/x
  3. Step 3: Cross multiply
    12,521.80x = 18,780.48 × 4,730.68
  4. Step 4: Simplify right side
    12,521.80x = 88,844,441.13
  5. Step 5: Solve for x
    x = 88,844,441.13/12,521.80
  6. Step 6: Final answer
    x = 7,095.18

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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.