Home / 28,290.69-42,436.14-8,569.41

Finding the Fourth Proportional to 28,290.69, 42,436.14 and 8,569.41

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Solution

The fourth proportional to 28,290.69, 42,436.14 and 8,569.41 is: 12,854.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.69 : 42,436.14 = 8,569.41 : x
  2. Step 2: Convert to fraction form
    28,290.69/42,436.14 = 8,569.41/x
  3. Step 3: Cross multiply
    28,290.69x = 42,436.14 × 8,569.41
  4. Step 4: Simplify right side
    28,290.69x = 363,652,682.48
  5. Step 5: Solve for x
    x = 363,652,682.48/28,290.69
  6. Step 6: Final answer
    x = 12,854.15

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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.