Home / 12,488.97-18,733.02-3,129.07

Finding the Fourth Proportional to 12,488.97, 18,733.02 and 3,129.07

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Solution

The fourth proportional to 12,488.97, 18,733.02 and 3,129.07 is: 4,693.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.97 : 18,733.02 = 3,129.07 : x
  2. Step 2: Convert to fraction form
    12,488.97/18,733.02 = 3,129.07/x
  3. Step 3: Cross multiply
    12,488.97x = 18,733.02 × 3,129.07
  4. Step 4: Simplify right side
    12,488.97x = 58,616,930.89
  5. Step 5: Solve for x
    x = 58,616,930.89/12,488.97
  6. Step 6: Final answer
    x = 4,693.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.