Home / 22,151.13-30,569.16-12,720.30

Finding the Fourth Proportional to 22,151.13, 30,569.16 and 12,720.30

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Solution

The fourth proportional to 22,151.13, 30,569.16 and 12,720.30 is: 17,554.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,151.13 : 30,569.16 = 12,720.30 : x
  2. Step 2: Convert to fraction form
    22,151.13/30,569.16 = 12,720.30/x
  3. Step 3: Cross multiply
    22,151.13x = 30,569.16 × 12,720.30
  4. Step 4: Simplify right side
    22,151.13x = 388,848,885.95
  5. Step 5: Solve for x
    x = 388,848,885.95/22,151.13
  6. Step 6: Final answer
    x = 17,554.36

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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.