Home / 12,210.29-16,852.20-10,220.12

Finding the Fourth Proportional to 12,210.29, 16,852.20 and 10,220.12

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Solution

The fourth proportional to 12,210.29, 16,852.20 and 10,220.12 is: 14,105.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.29 : 16,852.20 = 10,220.12 : x
  2. Step 2: Convert to fraction form
    12,210.29/16,852.20 = 10,220.12/x
  3. Step 3: Cross multiply
    12,210.29x = 16,852.20 × 10,220.12
  4. Step 4: Simplify right side
    12,210.29x = 172,231,599.16
  5. Step 5: Solve for x
    x = 172,231,599.16/12,210.29
  6. Step 6: Final answer
    x = 14,105.44

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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.