Home / 42,797.74-64,143.14-20,606.98

Finding the Fourth Proportional to 42,797.74, 64,143.14 and 20,606.98

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Solution

The fourth proportional to 42,797.74, 64,143.14 and 20,606.98 is: 30,884.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,797.74 : 64,143.14 = 20,606.98 : x
  2. Step 2: Convert to fraction form
    42,797.74/64,143.14 = 20,606.98/x
  3. Step 3: Cross multiply
    42,797.74x = 64,143.14 × 20,606.98
  4. Step 4: Simplify right side
    42,797.74x = 1,321,796,403.12
  5. Step 5: Solve for x
    x = 1,321,796,403.12/42,797.74
  6. Step 6: Final answer
    x = 30,884.72

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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.