Home / 55,657.12-83,518.44-20,621.20

Finding the Fourth Proportional to 55,657.12, 83,518.44 and 20,621.20

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Solution

The fourth proportional to 55,657.12, 83,518.44 and 20,621.20 is: 30,943.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,657.12 : 83,518.44 = 20,621.20 : x
  2. Step 2: Convert to fraction form
    55,657.12/83,518.44 = 20,621.20/x
  3. Step 3: Cross multiply
    55,657.12x = 83,518.44 × 20,621.20
  4. Step 4: Simplify right side
    55,657.12x = 1,722,250,454.93
  5. Step 5: Solve for x
    x = 1,722,250,454.93/55,657.12
  6. Step 6: Final answer
    x = 30,943.94

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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.