Home / 20,480.12-28,256.91-11,527.10

Finding the Fourth Proportional to 20,480.12, 28,256.91 and 11,527.10

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Solution

The fourth proportional to 20,480.12, 28,256.91 and 11,527.10 is: 15,904.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.12 : 28,256.91 = 11,527.10 : x
  2. Step 2: Convert to fraction form
    20,480.12/28,256.91 = 11,527.10/x
  3. Step 3: Cross multiply
    20,480.12x = 28,256.91 × 11,527.10
  4. Step 4: Simplify right side
    20,480.12x = 325,720,227.26
  5. Step 5: Solve for x
    x = 325,720,227.26/20,480.12
  6. Step 6: Final answer
    x = 15,904.21

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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.