Home / 12,619.83-17,408.75-9,630.47

Finding the Fourth Proportional to 12,619.83, 17,408.75 and 9,630.47

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Solution

The fourth proportional to 12,619.83, 17,408.75 and 9,630.47 is: 13,285.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.83 : 17,408.75 = 9,630.47 : x
  2. Step 2: Convert to fraction form
    12,619.83/17,408.75 = 9,630.47/x
  3. Step 3: Cross multiply
    12,619.83x = 17,408.75 × 9,630.47
  4. Step 4: Simplify right side
    12,619.83x = 167,654,418.11
  5. Step 5: Solve for x
    x = 167,654,418.11/12,619.83
  6. Step 6: Final answer
    x = 13,285.00

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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.