Home / 22,672.08-31,288.80-13,240.08

Finding the Fourth Proportional to 22,672.08, 31,288.80 and 13,240.08

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Solution

The fourth proportional to 22,672.08, 31,288.80 and 13,240.08 is: 18,272.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,672.08 : 31,288.80 = 13,240.08 : x
  2. Step 2: Convert to fraction form
    22,672.08/31,288.80 = 13,240.08/x
  3. Step 3: Cross multiply
    22,672.08x = 31,288.80 × 13,240.08
  4. Step 4: Simplify right side
    22,672.08x = 414,266,215.10
  5. Step 5: Solve for x
    x = 414,266,215.10/22,672.08
  6. Step 6: Final answer
    x = 18,272.09

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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.