Home / 30,811.44-42,545.72-19,500.89

Finding the Fourth Proportional to 30,811.44, 42,545.72 and 19,500.89

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Solution

The fourth proportional to 30,811.44, 42,545.72 and 19,500.89 is: 26,927.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.44 : 42,545.72 = 19,500.89 : x
  2. Step 2: Convert to fraction form
    30,811.44/42,545.72 = 19,500.89/x
  3. Step 3: Cross multiply
    30,811.44x = 42,545.72 × 19,500.89
  4. Step 4: Simplify right side
    30,811.44x = 829,679,487.68
  5. Step 5: Solve for x
    x = 829,679,487.68/30,811.44
  6. Step 6: Final answer
    x = 26,927.64

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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.