Home / 28,569.80-42,854.70-13,775.96

Finding the Fourth Proportional to 28,569.80, 42,854.70 and 13,775.96

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Solution

The fourth proportional to 28,569.80, 42,854.70 and 13,775.96 is: 20,663.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.80 : 42,854.70 = 13,775.96 : x
  2. Step 2: Convert to fraction form
    28,569.80/42,854.70 = 13,775.96/x
  3. Step 3: Cross multiply
    28,569.80x = 42,854.70 × 13,775.96
  4. Step 4: Simplify right side
    28,569.80x = 590,364,418.74
  5. Step 5: Solve for x
    x = 590,364,418.74/28,569.80
  6. Step 6: Final answer
    x = 20,663.94

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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.