Home / 22,421.16-30,940.83-12,862.80

Finding the Fourth Proportional to 22,421.16, 30,940.83 and 12,862.80

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Solution

The fourth proportional to 22,421.16, 30,940.83 and 12,862.80 is: 17,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.16 : 30,940.83 = 12,862.80 : x
  2. Step 2: Convert to fraction form
    22,421.16/30,940.83 = 12,862.80/x
  3. Step 3: Cross multiply
    22,421.16x = 30,940.83 × 12,862.80
  4. Step 4: Simplify right side
    22,421.16x = 397,985,708.12
  5. Step 5: Solve for x
    x = 397,985,708.12/22,421.16
  6. Step 6: Final answer
    x = 17,750.45

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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.