Home / 45,131.04-67,699.53-11,851.92

Finding the Fourth Proportional to 45,131.04, 67,699.53 and 11,851.92

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Solution

The fourth proportional to 45,131.04, 67,699.53 and 11,851.92 is: 17,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,131.04 : 67,699.53 = 11,851.92 : x
  2. Step 2: Convert to fraction form
    45,131.04/67,699.53 = 11,851.92/x
  3. Step 3: Cross multiply
    45,131.04x = 67,699.53 × 11,851.92
  4. Step 4: Simplify right side
    45,131.04x = 802,369,413.60
  5. Step 5: Solve for x
    x = 802,369,413.60/45,131.04
  6. Step 6: Final answer
    x = 17,778.66

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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.