Home / 10,378.75-14,322.68-5,663.13

Finding the Fourth Proportional to 10,378.75, 14,322.68 and 5,663.13

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Solution

The fourth proportional to 10,378.75, 14,322.68 and 5,663.13 is: 7,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.75 : 14,322.68 = 5,663.13 : x
  2. Step 2: Convert to fraction form
    10,378.75/14,322.68 = 5,663.13/x
  3. Step 3: Cross multiply
    10,378.75x = 14,322.68 × 5,663.13
  4. Step 4: Simplify right side
    10,378.75x = 81,111,198.79
  5. Step 5: Solve for x
    x = 81,111,198.79/10,378.75
  6. Step 6: Final answer
    x = 7,815.12

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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.