Home / 12,512.90-18,643.40-12,332.48

Finding the Fourth Proportional to 12,512.90, 18,643.40 and 12,332.48

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Solution

The fourth proportional to 12,512.90, 18,643.40 and 12,332.48 is: 18,374.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.90 : 18,643.40 = 12,332.48 : x
  2. Step 2: Convert to fraction form
    12,512.90/18,643.40 = 12,332.48/x
  3. Step 3: Cross multiply
    12,512.90x = 18,643.40 × 12,332.48
  4. Step 4: Simplify right side
    12,512.90x = 229,919,202.75
  5. Step 5: Solve for x
    x = 229,919,202.75/12,512.90
  6. Step 6: Final answer
    x = 18,374.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.