Home / 40,851.90-61,261.02-12,762.36

Finding the Fourth Proportional to 40,851.90, 61,261.02 and 12,762.36

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Solution

The fourth proportional to 40,851.90, 61,261.02 and 12,762.36 is: 19,138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,851.90 : 61,261.02 = 12,762.36 : x
  2. Step 2: Convert to fraction form
    40,851.90/61,261.02 = 12,762.36/x
  3. Step 3: Cross multiply
    40,851.90x = 61,261.02 × 12,762.36
  4. Step 4: Simplify right side
    40,851.90x = 781,835,191.21
  5. Step 5: Solve for x
    x = 781,835,191.21/40,851.90
  6. Step 6: Final answer
    x = 19,138.28

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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.