Home / 12,622.75-17,419.40-7,320.64

Finding the Fourth Proportional to 12,622.75, 17,419.40 and 7,320.64

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Solution

The fourth proportional to 12,622.75, 17,419.40 and 7,320.64 is: 10,102.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.75 : 17,419.40 = 7,320.64 : x
  2. Step 2: Convert to fraction form
    12,622.75/17,419.40 = 7,320.64/x
  3. Step 3: Cross multiply
    12,622.75x = 17,419.40 × 7,320.64
  4. Step 4: Simplify right side
    12,622.75x = 127,521,156.42
  5. Step 5: Solve for x
    x = 127,521,156.42/12,622.75
  6. Step 6: Final answer
    x = 10,102.49

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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.