Home / 15,490.99-21,386.46-10,201.21

Finding the Fourth Proportional to 15,490.99, 21,386.46 and 10,201.21

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Solution

The fourth proportional to 15,490.99, 21,386.46 and 10,201.21 is: 14,083.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.99 : 21,386.46 = 10,201.21 : x
  2. Step 2: Convert to fraction form
    15,490.99/21,386.46 = 10,201.21/x
  3. Step 3: Cross multiply
    15,490.99x = 21,386.46 × 10,201.21
  4. Step 4: Simplify right side
    15,490.99x = 218,167,769.62
  5. Step 5: Solve for x
    x = 218,167,769.62/15,490.99
  6. Step 6: Final answer
    x = 14,083.53

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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.