Home / 10,133.16-15,178.14-7,640.52

Finding the Fourth Proportional to 10,133.16, 15,178.14 and 7,640.52

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Solution

The fourth proportional to 10,133.16, 15,178.14 and 7,640.52 is: 11,444.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,133.16 : 15,178.14 = 7,640.52 : x
  2. Step 2: Convert to fraction form
    10,133.16/15,178.14 = 7,640.52/x
  3. Step 3: Cross multiply
    10,133.16x = 15,178.14 × 7,640.52
  4. Step 4: Simplify right side
    10,133.16x = 115,968,882.23
  5. Step 5: Solve for x
    x = 115,968,882.23/10,133.16
  6. Step 6: Final answer
    x = 11,444.49

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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.