Home / 42,010.72-63,026.80-13,938.60

Finding the Fourth Proportional to 42,010.72, 63,026.80 and 13,938.60

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Solution

The fourth proportional to 42,010.72, 63,026.80 and 13,938.60 is: 20,911.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,010.72 : 63,026.80 = 13,938.60 : x
  2. Step 2: Convert to fraction form
    42,010.72/63,026.80 = 13,938.60/x
  3. Step 3: Cross multiply
    42,010.72x = 63,026.80 × 13,938.60
  4. Step 4: Simplify right side
    42,010.72x = 878,505,354.48
  5. Step 5: Solve for x
    x = 878,505,354.48/42,010.72
  6. Step 6: Final answer
    x = 20,911.46

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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.