Home / 42,800.96-64,228.09-20,616.58

Finding the Fourth Proportional to 42,800.96, 64,228.09 and 20,616.58

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Solution

The fourth proportional to 42,800.96, 64,228.09 and 20,616.58 is: 30,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,800.96 : 64,228.09 = 20,616.58 : x
  2. Step 2: Convert to fraction form
    42,800.96/64,228.09 = 20,616.58/x
  3. Step 3: Cross multiply
    42,800.96x = 64,228.09 × 20,616.58
  4. Step 4: Simplify right side
    42,800.96x = 1,324,163,261.85
  5. Step 5: Solve for x
    x = 1,324,163,261.85/42,800.96
  6. Step 6: Final answer
    x = 30,937.70

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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.