Home / 42,420.05-63,632.60-11,255.21

Finding the Fourth Proportional to 42,420.05, 63,632.60 and 11,255.21

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Solution

The fourth proportional to 42,420.05, 63,632.60 and 11,255.21 is: 16,883.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.05 : 63,632.60 = 11,255.21 : x
  2. Step 2: Convert to fraction form
    42,420.05/63,632.60 = 11,255.21/x
  3. Step 3: Cross multiply
    42,420.05x = 63,632.60 × 11,255.21
  4. Step 4: Simplify right side
    42,420.05x = 716,198,219.57
  5. Step 5: Solve for x
    x = 716,198,219.57/42,420.05
  6. Step 6: Final answer
    x = 16,883.48

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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.