Home / 22,615.20-31,209.30-13,661.46

Finding the Fourth Proportional to 22,615.20, 31,209.30 and 13,661.46

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Solution

The fourth proportional to 22,615.20, 31,209.30 and 13,661.46 is: 18,853.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.20 : 31,209.30 = 13,661.46 : x
  2. Step 2: Convert to fraction form
    22,615.20/31,209.30 = 13,661.46/x
  3. Step 3: Cross multiply
    22,615.20x = 31,209.30 × 13,661.46
  4. Step 4: Simplify right side
    22,615.20x = 426,364,603.58
  5. Step 5: Solve for x
    x = 426,364,603.58/22,615.20
  6. Step 6: Final answer
    x = 18,853.01

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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.