Home / 10,300.39-15,422.91-8,473.56

Finding the Fourth Proportional to 10,300.39, 15,422.91 and 8,473.56

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Solution

The fourth proportional to 10,300.39, 15,422.91 and 8,473.56 is: 12,687.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,300.39 : 15,422.91 = 8,473.56 : x
  2. Step 2: Convert to fraction form
    10,300.39/15,422.91 = 8,473.56/x
  3. Step 3: Cross multiply
    10,300.39x = 15,422.91 × 8,473.56
  4. Step 4: Simplify right side
    10,300.39x = 130,686,950.40
  5. Step 5: Solve for x
    x = 130,686,950.40/10,300.39
  6. Step 6: Final answer
    x = 12,687.57

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1.5x scale

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.