Home / 20,319.51-28,041.99-11,367.17

Finding the Fourth Proportional to 20,319.51, 28,041.99 and 11,367.17

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Solution

The fourth proportional to 20,319.51, 28,041.99 and 11,367.17 is: 15,687.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.51 : 28,041.99 = 11,367.17 : x
  2. Step 2: Convert to fraction form
    20,319.51/28,041.99 = 11,367.17/x
  3. Step 3: Cross multiply
    20,319.51x = 28,041.99 × 11,367.17
  4. Step 4: Simplify right side
    20,319.51x = 318,757,870.42
  5. Step 5: Solve for x
    x = 318,757,870.42/20,319.51
  6. Step 6: Final answer
    x = 15,687.28

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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.