Home / 28,569.13-42,881.33-13,788.45

Finding the Fourth Proportional to 28,569.13, 42,881.33 and 13,788.45

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Solution

The fourth proportional to 28,569.13, 42,881.33 and 13,788.45 is: 20,696.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.13 : 42,881.33 = 13,788.45 : x
  2. Step 2: Convert to fraction form
    28,569.13/42,881.33 = 13,788.45/x
  3. Step 3: Cross multiply
    28,569.13x = 42,881.33 × 13,788.45
  4. Step 4: Simplify right side
    28,569.13x = 591,267,109.11
  5. Step 5: Solve for x
    x = 591,267,109.11/28,569.13
  6. Step 6: Final answer
    x = 20,696.02

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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.