Home / 15,531.99-21,435.04-11,696.76

Finding the Fourth Proportional to 15,531.99, 21,435.04 and 11,696.76

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Solution

The fourth proportional to 15,531.99, 21,435.04 and 11,696.76 is: 16,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.99 : 21,435.04 = 11,696.76 : x
  2. Step 2: Convert to fraction form
    15,531.99/21,435.04 = 11,696.76/x
  3. Step 3: Cross multiply
    15,531.99x = 21,435.04 × 11,696.76
  4. Step 4: Simplify right side
    15,531.99x = 250,720,518.47
  5. Step 5: Solve for x
    x = 250,720,518.47/15,531.99
  6. Step 6: Final answer
    x = 16,142.20

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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.