Home / 15,206.60-20,990.76-11,259.56

Finding the Fourth Proportional to 15,206.60, 20,990.76 and 11,259.56

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Solution

The fourth proportional to 15,206.60, 20,990.76 and 11,259.56 is: 15,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.60 : 20,990.76 = 11,259.56 : x
  2. Step 2: Convert to fraction form
    15,206.60/20,990.76 = 11,259.56/x
  3. Step 3: Cross multiply
    15,206.60x = 20,990.76 × 11,259.56
  4. Step 4: Simplify right side
    15,206.60x = 236,346,721.67
  5. Step 5: Solve for x
    x = 236,346,721.67/15,206.60
  6. Step 6: Final answer
    x = 15,542.38

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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.