Home / 22,713.60-31,345.12-12,777.60

Finding the Fourth Proportional to 22,713.60, 31,345.12 and 12,777.60

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Solution

The fourth proportional to 22,713.60, 31,345.12 and 12,777.60 is: 17,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,713.60 : 31,345.12 = 12,777.60 : x
  2. Step 2: Convert to fraction form
    22,713.60/31,345.12 = 12,777.60/x
  3. Step 3: Cross multiply
    22,713.60x = 31,345.12 × 12,777.60
  4. Step 4: Simplify right side
    22,713.60x = 400,515,405.31
  5. Step 5: Solve for x
    x = 400,515,405.31/22,713.60
  6. Step 6: Final answer
    x = 17,633.29

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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.