Home / 55,640.32-83,402.16-20,557.60

Finding the Fourth Proportional to 55,640.32, 83,402.16 and 20,557.60

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Solution

The fourth proportional to 55,640.32, 83,402.16 and 20,557.60 is: 30,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,640.32 : 83,402.16 = 20,557.60 : x
  2. Step 2: Convert to fraction form
    55,640.32/83,402.16 = 20,557.60/x
  3. Step 3: Cross multiply
    55,640.32x = 83,402.16 × 20,557.60
  4. Step 4: Simplify right side
    55,640.32x = 1,714,548,244.42
  5. Step 5: Solve for x
    x = 1,714,548,244.42/55,640.32
  6. Step 6: Final answer
    x = 30,814.85

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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.