Home / 20,480.24-28,263.63-11,528.32

Finding the Fourth Proportional to 20,480.24, 28,263.63 and 11,528.32

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Solution

The fourth proportional to 20,480.24, 28,263.63 and 11,528.32 is: 15,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.24 : 28,263.63 = 11,528.32 : x
  2. Step 2: Convert to fraction form
    20,480.24/28,263.63 = 11,528.32/x
  3. Step 3: Cross multiply
    20,480.24x = 28,263.63 × 11,528.32
  4. Step 4: Simplify right side
    20,480.24x = 325,832,100.34
  5. Step 5: Solve for x
    x = 325,832,100.34/20,480.24
  6. Step 6: Final answer
    x = 15,909.59

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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.