Home / 42,385.36-63,576.96-20,214.40

Finding the Fourth Proportional to 42,385.36, 63,576.96 and 20,214.40

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Solution

The fourth proportional to 42,385.36, 63,576.96 and 20,214.40 is: 30,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,385.36 : 63,576.96 = 20,214.40 : x
  2. Step 2: Convert to fraction form
    42,385.36/63,576.96 = 20,214.40/x
  3. Step 3: Cross multiply
    42,385.36x = 63,576.96 × 20,214.40
  4. Step 4: Simplify right side
    42,385.36x = 1,285,170,100.22
  5. Step 5: Solve for x
    x = 1,285,170,100.22/42,385.36
  6. Step 6: Final answer
    x = 30,321.08

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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.