Home / 12,909.57-17,820.63-10,930.38

Finding the Fourth Proportional to 12,909.57, 17,820.63 and 10,930.38

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Solution

The fourth proportional to 12,909.57, 17,820.63 and 10,930.38 is: 15,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.57 : 17,820.63 = 10,930.38 : x
  2. Step 2: Convert to fraction form
    12,909.57/17,820.63 = 10,930.38/x
  3. Step 3: Cross multiply
    12,909.57x = 17,820.63 × 10,930.38
  4. Step 4: Simplify right side
    12,909.57x = 194,786,257.74
  5. Step 5: Solve for x
    x = 194,786,257.74/12,909.57
  6. Step 6: Final answer
    x = 15,088.52

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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.