Home / 28,618.70-42,952.75-19,859.76

Finding the Fourth Proportional to 28,618.70, 42,952.75 and 19,859.76

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Solution

The fourth proportional to 28,618.70, 42,952.75 and 19,859.76 is: 29,806.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.70 : 42,952.75 = 19,859.76 : x
  2. Step 2: Convert to fraction form
    28,618.70/42,952.75 = 19,859.76/x
  3. Step 3: Cross multiply
    28,618.70x = 42,952.75 × 19,859.76
  4. Step 4: Simplify right side
    28,618.70x = 853,031,256.69
  5. Step 5: Solve for x
    x = 853,031,256.69/28,618.70
  6. Step 6: Final answer
    x = 29,806.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.