Home / 28,739.68-43,116.40-9,018.20

Finding the Fourth Proportional to 28,739.68, 43,116.40 and 9,018.20

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Solution

The fourth proportional to 28,739.68, 43,116.40 and 9,018.20 is: 13,529.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,739.68 : 43,116.40 = 9,018.20 : x
  2. Step 2: Convert to fraction form
    28,739.68/43,116.40 = 9,018.20/x
  3. Step 3: Cross multiply
    28,739.68x = 43,116.40 × 9,018.20
  4. Step 4: Simplify right side
    28,739.68x = 388,832,437.54
  5. Step 5: Solve for x
    x = 388,832,437.54/28,739.68
  6. Step 6: Final answer
    x = 13,529.46

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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.