Home / 21,770.19-30,042.16-12,210.41

Finding the Fourth Proportional to 21,770.19, 30,042.16 and 12,210.41

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Solution

The fourth proportional to 21,770.19, 30,042.16 and 12,210.41 is: 16,849.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.19 : 30,042.16 = 12,210.41 : x
  2. Step 2: Convert to fraction form
    21,770.19/30,042.16 = 12,210.41/x
  3. Step 3: Cross multiply
    21,770.19x = 30,042.16 × 12,210.41
  4. Step 4: Simplify right side
    21,770.19x = 366,827,135.46
  5. Step 5: Solve for x
    x = 366,827,135.46/21,770.19
  6. Step 6: Final answer
    x = 16,849.97

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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.