Home / 31,051.92-42,855.30-18,307.92

Finding the Fourth Proportional to 31,051.92, 42,855.30 and 18,307.92

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Solution

The fourth proportional to 31,051.92, 42,855.30 and 18,307.92 is: 25,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,051.92 : 42,855.30 = 18,307.92 : x
  2. Step 2: Convert to fraction form
    31,051.92/42,855.30 = 18,307.92/x
  3. Step 3: Cross multiply
    31,051.92x = 42,855.30 × 18,307.92
  4. Step 4: Simplify right side
    31,051.92x = 784,591,403.98
  5. Step 5: Solve for x
    x = 784,591,403.98/31,051.92
  6. Step 6: Final answer
    x = 25,267.08

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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.