Home / 20,400.28-30,577.38-10,019.32

Finding the Fourth Proportional to 20,400.28, 30,577.38 and 10,019.32

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Solution

The fourth proportional to 20,400.28, 30,577.38 and 10,019.32 is: 15,017.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.28 : 30,577.38 = 10,019.32 : x
  2. Step 2: Convert to fraction form
    20,400.28/30,577.38 = 10,019.32/x
  3. Step 3: Cross multiply
    20,400.28x = 30,577.38 × 10,019.32
  4. Step 4: Simplify right side
    20,400.28x = 306,364,554.98
  5. Step 5: Solve for x
    x = 306,364,554.98/20,400.28
  6. Step 6: Final answer
    x = 15,017.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.