Home / 13,943.20-19,243.20-7,656.16

Finding the Fourth Proportional to 13,943.20, 19,243.20 and 7,656.16

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Solution

The fourth proportional to 13,943.20, 19,243.20 and 7,656.16 is: 10,566.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.20 : 19,243.20 = 7,656.16 : x
  2. Step 2: Convert to fraction form
    13,943.20/19,243.20 = 7,656.16/x
  3. Step 3: Cross multiply
    13,943.20x = 19,243.20 × 7,656.16
  4. Step 4: Simplify right side
    13,943.20x = 147,329,018.11
  5. Step 5: Solve for x
    x = 147,329,018.11/13,943.20
  6. Step 6: Final answer
    x = 10,566.37

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1.5x scale

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.