Home / 28,936.80-43,405.20-17,807.40

Finding the Fourth Proportional to 28,936.80, 43,405.20 and 17,807.40

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Solution

The fourth proportional to 28,936.80, 43,405.20 and 17,807.40 is: 26,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.80 : 43,405.20 = 17,807.40 : x
  2. Step 2: Convert to fraction form
    28,936.80/43,405.20 = 17,807.40/x
  3. Step 3: Cross multiply
    28,936.80x = 43,405.20 × 17,807.40
  4. Step 4: Simplify right side
    28,936.80x = 772,933,758.48
  5. Step 5: Solve for x
    x = 772,933,758.48/28,936.80
  6. Step 6: Final answer
    x = 26,711.10

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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.