Home / 10,191.80-14,065.68-5,715.56

Finding the Fourth Proportional to 10,191.80, 14,065.68 and 5,715.56

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Solution

The fourth proportional to 10,191.80, 14,065.68 and 5,715.56 is: 7,888.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191.80 : 14,065.68 = 5,715.56 : x
  2. Step 2: Convert to fraction form
    10,191.80/14,065.68 = 5,715.56/x
  3. Step 3: Cross multiply
    10,191.80x = 14,065.68 × 5,715.56
  4. Step 4: Simplify right side
    10,191.80x = 80,393,237.98
  5. Step 5: Solve for x
    x = 80,393,237.98/10,191.80
  6. Step 6: Final answer
    x = 7,888.03

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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.