Home / 35,520.20-49,016.47-20,415.32

Finding the Fourth Proportional to 35,520.20, 49,016.47 and 20,415.32

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Solution

The fourth proportional to 35,520.20, 49,016.47 and 20,415.32 is: 28,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,520.20 : 49,016.47 = 20,415.32 : x
  2. Step 2: Convert to fraction form
    35,520.20/49,016.47 = 20,415.32/x
  3. Step 3: Cross multiply
    35,520.20x = 49,016.47 × 20,415.32
  4. Step 4: Simplify right side
    35,520.20x = 1,000,686,920.32
  5. Step 5: Solve for x
    x = 1,000,686,920.32/35,520.20
  6. Step 6: Final answer
    x = 28,172.33

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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.