Home / 15,888.60-21,876.42-13,493.58

Finding the Fourth Proportional to 15,888.60, 21,876.42 and 13,493.58

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Solution

The fourth proportional to 15,888.60, 21,876.42 and 13,493.58 is: 18,578.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,888.60 : 21,876.42 = 13,493.58 : x
  2. Step 2: Convert to fraction form
    15,888.60/21,876.42 = 13,493.58/x
  3. Step 3: Cross multiply
    15,888.60x = 21,876.42 × 13,493.58
  4. Step 4: Simplify right side
    15,888.60x = 295,191,223.38
  5. Step 5: Solve for x
    x = 295,191,223.38/15,888.60
  6. Step 6: Final answer
    x = 18,578.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.