Home / 15,581.07-21,481.47-11,535.12

Finding the Fourth Proportional to 15,581.07, 21,481.47 and 11,535.12

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Solution

The fourth proportional to 15,581.07, 21,481.47 and 11,535.12 is: 15,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.07 : 21,481.47 = 11,535.12 : x
  2. Step 2: Convert to fraction form
    15,581.07/21,481.47 = 11,535.12/x
  3. Step 3: Cross multiply
    15,581.07x = 21,481.47 × 11,535.12
  4. Step 4: Simplify right side
    15,581.07x = 247,791,334.23
  5. Step 5: Solve for x
    x = 247,791,334.23/15,581.07
  6. Step 6: Final answer
    x = 15,903.36

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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.