Home / 42,579.42-63,868.80-10,986.79

Finding the Fourth Proportional to 42,579.42, 63,868.80 and 10,986.79

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Solution

The fourth proportional to 42,579.42, 63,868.80 and 10,986.79 is: 16,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,579.42 : 63,868.80 = 10,986.79 : x
  2. Step 2: Convert to fraction form
    42,579.42/63,868.80 = 10,986.79/x
  3. Step 3: Cross multiply
    42,579.42x = 63,868.80 × 10,986.79
  4. Step 4: Simplify right side
    42,579.42x = 701,713,093.15
  5. Step 5: Solve for x
    x = 701,713,093.15/42,579.42
  6. Step 6: Final answer
    x = 16,480.10

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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.