Home / 12,669.60-17,490-9,447.48

Finding the Fourth Proportional to 12,669.60, 17,490 and 9,447.48

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Solution

The fourth proportional to 12,669.60, 17,490 and 9,447.48 is: 13,041.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.60 : 17,490 = 9,447.48 : x
  2. Step 2: Convert to fraction form
    12,669.60/17,490 = 9,447.48/x
  3. Step 3: Cross multiply
    12,669.60x = 17,490 × 9,447.48
  4. Step 4: Simplify right side
    12,669.60x = 165,236,425.20
  5. Step 5: Solve for x
    x = 165,236,425.20/12,669.60
  6. Step 6: Final answer
    x = 13,041.96

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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.