Home / 42,407.80-63,611.70-11,243.05

Finding the Fourth Proportional to 42,407.80, 63,611.70 and 11,243.05

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Solution

The fourth proportional to 42,407.80, 63,611.70 and 11,243.05 is: 16,864.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,407.80 : 63,611.70 = 11,243.05 : x
  2. Step 2: Convert to fraction form
    42,407.80/63,611.70 = 11,243.05/x
  3. Step 3: Cross multiply
    42,407.80x = 63,611.70 × 11,243.05
  4. Step 4: Simplify right side
    42,407.80x = 715,189,523.69
  5. Step 5: Solve for x
    x = 715,189,523.69/42,407.80
  6. Step 6: Final answer
    x = 16,864.58

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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.