Home / 20,478.33-28,259.91-11,526.21

Finding the Fourth Proportional to 20,478.33, 28,259.91 and 11,526.21

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Solution

The fourth proportional to 20,478.33, 28,259.91 and 11,526.21 is: 15,906.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478.33 : 28,259.91 = 11,526.21 : x
  2. Step 2: Convert to fraction form
    20,478.33/28,259.91 = 11,526.21/x
  3. Step 3: Cross multiply
    20,478.33x = 28,259.91 × 11,526.21
  4. Step 4: Simplify right side
    20,478.33x = 325,729,657.24
  5. Step 5: Solve for x
    x = 325,729,657.24/20,478.33
  6. Step 6: Final answer
    x = 15,906.07

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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.