Home / 28,623.76-42,960.35-19,864.82

Finding the Fourth Proportional to 28,623.76, 42,960.35 and 19,864.82

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Solution

The fourth proportional to 28,623.76, 42,960.35 and 19,864.82 is: 29,814.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,623.76 : 42,960.35 = 19,864.82 : x
  2. Step 2: Convert to fraction form
    28,623.76/42,960.35 = 19,864.82/x
  3. Step 3: Cross multiply
    28,623.76x = 42,960.35 × 19,864.82
  4. Step 4: Simplify right side
    28,623.76x = 853,399,776.95
  5. Step 5: Solve for x
    x = 853,399,776.95/28,623.76
  6. Step 6: Final answer
    x = 29,814.39

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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.