Home / 12,525.65-18,788.38-5,130.11

Finding the Fourth Proportional to 12,525.65, 18,788.38 and 5,130.11

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Solution

The fourth proportional to 12,525.65, 18,788.38 and 5,130.11 is: 7,695.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,525.65 : 18,788.38 = 5,130.11 : x
  2. Step 2: Convert to fraction form
    12,525.65/18,788.38 = 5,130.11/x
  3. Step 3: Cross multiply
    12,525.65x = 18,788.38 × 5,130.11
  4. Step 4: Simplify right side
    12,525.65x = 96,386,456.12
  5. Step 5: Solve for x
    x = 96,386,456.12/12,525.65
  6. Step 6: Final answer
    x = 7,695.13

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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.