Home / 31,166.40-42,998.48-18,416.88

Finding the Fourth Proportional to 31,166.40, 42,998.48 and 18,416.88

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Solution

The fourth proportional to 31,166.40, 42,998.48 and 18,416.88 is: 25,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,166.40 : 42,998.48 = 18,416.88 : x
  2. Step 2: Convert to fraction form
    31,166.40/42,998.48 = 18,416.88/x
  3. Step 3: Cross multiply
    31,166.40x = 42,998.48 × 18,416.88
  4. Step 4: Simplify right side
    31,166.40x = 791,897,846.34
  5. Step 5: Solve for x
    x = 791,897,846.34/31,166.40
  6. Step 6: Final answer
    x = 25,408.70

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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.