Home / 10,319.49-15,471.63-8,347.59

Finding the Fourth Proportional to 10,319.49, 15,471.63 and 8,347.59

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Solution

The fourth proportional to 10,319.49, 15,471.63 and 8,347.59 is: 12,515.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,319.49 : 15,471.63 = 8,347.59 : x
  2. Step 2: Convert to fraction form
    10,319.49/15,471.63 = 8,347.59/x
  3. Step 3: Cross multiply
    10,319.49x = 15,471.63 × 8,347.59
  4. Step 4: Simplify right side
    10,319.49x = 129,150,823.87
  5. Step 5: Solve for x
    x = 129,150,823.87/10,319.49
  6. Step 6: Final answer
    x = 12,515.23

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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.