Home / 10,976.08-15,143.16-7,618

Finding the Fourth Proportional to 10,976.08, 15,143.16 and 7,618

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Solution

The fourth proportional to 10,976.08, 15,143.16 and 7,618 is: 10,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.08 : 15,143.16 = 7,618 : x
  2. Step 2: Convert to fraction form
    10,976.08/15,143.16 = 7,618/x
  3. Step 3: Cross multiply
    10,976.08x = 15,143.16 × 7,618
  4. Step 4: Simplify right side
    10,976.08x = 115,360,592.88
  5. Step 5: Solve for x
    x = 115,360,592.88/10,976.08
  6. Step 6: Final answer
    x = 10,510.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.