Home / 20,309.16-28,023.96-11,356.32

Finding the Fourth Proportional to 20,309.16, 28,023.96 and 11,356.32

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Solution

The fourth proportional to 20,309.16, 28,023.96 and 11,356.32 is: 15,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.16 : 28,023.96 = 11,356.32 : x
  2. Step 2: Convert to fraction form
    20,309.16/28,023.96 = 11,356.32/x
  3. Step 3: Cross multiply
    20,309.16x = 28,023.96 × 11,356.32
  4. Step 4: Simplify right side
    20,309.16x = 318,249,057.43
  5. Step 5: Solve for x
    x = 318,249,057.43/20,309.16
  6. Step 6: Final answer
    x = 15,670.22

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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.