Home / 28,343.80-39,130.64-18,796.66

Finding the Fourth Proportional to 28,343.80, 39,130.64 and 18,796.66

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Solution

The fourth proportional to 28,343.80, 39,130.64 and 18,796.66 is: 25,950.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.80 : 39,130.64 = 18,796.66 : x
  2. Step 2: Convert to fraction form
    28,343.80/39,130.64 = 18,796.66/x
  3. Step 3: Cross multiply
    28,343.80x = 39,130.64 × 18,796.66
  4. Step 4: Simplify right side
    28,343.80x = 735,525,335.66
  5. Step 5: Solve for x
    x = 735,525,335.66/28,343.80
  6. Step 6: Final answer
    x = 25,950.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.