Home / 10,069.32-15,102.75-5,142.51

Finding the Fourth Proportional to 10,069.32, 15,102.75 and 5,142.51

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Solution

The fourth proportional to 10,069.32, 15,102.75 and 5,142.51 is: 7,713.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,069.32 : 15,102.75 = 5,142.51 : x
  2. Step 2: Convert to fraction form
    10,069.32/15,102.75 = 5,142.51/x
  3. Step 3: Cross multiply
    10,069.32x = 15,102.75 × 5,142.51
  4. Step 4: Simplify right side
    10,069.32x = 77,666,042.90
  5. Step 5: Solve for x
    x = 77,666,042.90/10,069.32
  6. Step 6: Final answer
    x = 7,713.14

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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.