Home / 42,219.84-63,311.28-20,039.60

Finding the Fourth Proportional to 42,219.84, 63,311.28 and 20,039.60

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Solution

The fourth proportional to 42,219.84, 63,311.28 and 20,039.60 is: 30,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,219.84 : 63,311.28 = 20,039.60 : x
  2. Step 2: Convert to fraction form
    42,219.84/63,311.28 = 20,039.60/x
  3. Step 3: Cross multiply
    42,219.84x = 63,311.28 × 20,039.60
  4. Step 4: Simplify right side
    42,219.84x = 1,268,732,726.69
  5. Step 5: Solve for x
    x = 1,268,732,726.69/42,219.84
  6. Step 6: Final answer
    x = 30,050.63

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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.