Home / 12,398.36-17,108.55-7,361.72

Finding the Fourth Proportional to 12,398.36, 17,108.55 and 7,361.72

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Solution

The fourth proportional to 12,398.36, 17,108.55 and 7,361.72 is: 10,158.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.36 : 17,108.55 = 7,361.72 : x
  2. Step 2: Convert to fraction form
    12,398.36/17,108.55 = 7,361.72/x
  3. Step 3: Cross multiply
    12,398.36x = 17,108.55 × 7,361.72
  4. Step 4: Simplify right side
    12,398.36x = 125,948,354.71
  5. Step 5: Solve for x
    x = 125,948,354.71/12,398.36
  6. Step 6: Final answer
    x = 10,158.47

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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.