Home / 12,622.16-17,418.65-7,320.12

Finding the Fourth Proportional to 12,622.16, 17,418.65 and 7,320.12

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Solution

The fourth proportional to 12,622.16, 17,418.65 and 7,320.12 is: 10,101.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.16 : 17,418.65 = 7,320.12 : x
  2. Step 2: Convert to fraction form
    12,622.16/17,418.65 = 7,320.12/x
  3. Step 3: Cross multiply
    12,622.16x = 17,418.65 × 7,320.12
  4. Step 4: Simplify right side
    12,622.16x = 127,506,571.64
  5. Step 5: Solve for x
    x = 127,506,571.64/12,622.16
  6. Step 6: Final answer
    x = 10,101.81

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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.