Home / 13,943.76-19,242.54-7,656

Finding the Fourth Proportional to 13,943.76, 19,242.54 and 7,656

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Solution

The fourth proportional to 13,943.76, 19,242.54 and 7,656 is: 10,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.76 : 19,242.54 = 7,656 : x
  2. Step 2: Convert to fraction form
    13,943.76/19,242.54 = 7,656/x
  3. Step 3: Cross multiply
    13,943.76x = 19,242.54 × 7,656
  4. Step 4: Simplify right side
    13,943.76x = 147,320,886.24
  5. Step 5: Solve for x
    x = 147,320,886.24/13,943.76
  6. Step 6: Final answer
    x = 10,565.36

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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.