Home / 12,922.02-17,820.81-10,122.66

Finding the Fourth Proportional to 12,922.02, 17,820.81 and 10,122.66

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Solution

The fourth proportional to 12,922.02, 17,820.81 and 10,122.66 is: 13,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922.02 : 17,820.81 = 10,122.66 : x
  2. Step 2: Convert to fraction form
    12,922.02/17,820.81 = 10,122.66/x
  3. Step 3: Cross multiply
    12,922.02x = 17,820.81 × 10,122.66
  4. Step 4: Simplify right side
    12,922.02x = 180,394,000.55
  5. Step 5: Solve for x
    x = 180,394,000.55/12,922.02
  6. Step 6: Final answer
    x = 13,960.20

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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.