Home / 10,319.35-14,208.33-9,106.78

Finding the Fourth Proportional to 10,319.35, 14,208.33 and 9,106.78

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Solution

The fourth proportional to 10,319.35, 14,208.33 and 9,106.78 is: 12,538.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,319.35 : 14,208.33 = 9,106.78 : x
  2. Step 2: Convert to fraction form
    10,319.35/14,208.33 = 9,106.78/x
  3. Step 3: Cross multiply
    10,319.35x = 14,208.33 × 9,106.78
  4. Step 4: Simplify right side
    10,319.35x = 129,392,135.48
  5. Step 5: Solve for x
    x = 129,392,135.48/10,319.35
  6. Step 6: Final answer
    x = 12,538.79

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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.