Home / 15,229.49-21,024.56-10,505.57

Finding the Fourth Proportional to 15,229.49, 21,024.56 and 10,505.57

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Solution

The fourth proportional to 15,229.49, 21,024.56 and 10,505.57 is: 14,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.49 : 21,024.56 = 10,505.57 : x
  2. Step 2: Convert to fraction form
    15,229.49/21,024.56 = 10,505.57/x
  3. Step 3: Cross multiply
    15,229.49x = 21,024.56 × 10,505.57
  4. Step 4: Simplify right side
    15,229.49x = 220,874,907.94
  5. Step 5: Solve for x
    x = 220,874,907.94/15,229.49
  6. Step 6: Final answer
    x = 14,503.11

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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.