Home / 22,685.12-31,306.88-12,615.81

Finding the Fourth Proportional to 22,685.12, 31,306.88 and 12,615.81

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Solution

The fourth proportional to 22,685.12, 31,306.88 and 12,615.81 is: 17,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,685.12 : 31,306.88 = 12,615.81 : x
  2. Step 2: Convert to fraction form
    22,685.12/31,306.88 = 12,615.81/x
  3. Step 3: Cross multiply
    22,685.12x = 31,306.88 × 12,615.81
  4. Step 4: Simplify right side
    22,685.12x = 394,961,649.77
  5. Step 5: Solve for x
    x = 394,961,649.77/22,685.12
  6. Step 6: Final answer
    x = 17,410.60

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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.