Home / 12,920.07-17,803.40-12,222.75

Finding the Fourth Proportional to 12,920.07, 17,803.40 and 12,222.75

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Solution

The fourth proportional to 12,920.07, 17,803.40 and 12,222.75 is: 16,842.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.07 : 17,803.40 = 12,222.75 : x
  2. Step 2: Convert to fraction form
    12,920.07/17,803.40 = 12,222.75/x
  3. Step 3: Cross multiply
    12,920.07x = 17,803.40 × 12,222.75
  4. Step 4: Simplify right side
    12,920.07x = 217,606,446.24
  5. Step 5: Solve for x
    x = 217,606,446.24/12,920.07
  6. Step 6: Final answer
    x = 16,842.51

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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.