Home / 42,190.20-63,212.40-19,955.70

Finding the Fourth Proportional to 42,190.20, 63,212.40 and 19,955.70

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Solution

The fourth proportional to 42,190.20, 63,212.40 and 19,955.70 is: 29,899.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,190.20 : 63,212.40 = 19,955.70 : x
  2. Step 2: Convert to fraction form
    42,190.20/63,212.40 = 19,955.70/x
  3. Step 3: Cross multiply
    42,190.20x = 63,212.40 × 19,955.70
  4. Step 4: Simplify right side
    42,190.20x = 1,261,447,690.68
  5. Step 5: Solve for x
    x = 1,261,447,690.68/42,190.20
  6. Step 6: Final answer
    x = 29,899.07

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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.