Home / 28,739.80-43,080.13-15,564.34

Finding the Fourth Proportional to 28,739.80, 43,080.13 and 15,564.34

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Solution

The fourth proportional to 28,739.80, 43,080.13 and 15,564.34 is: 23,330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,739.80 : 43,080.13 = 15,564.34 : x
  2. Step 2: Convert to fraction form
    28,739.80/43,080.13 = 15,564.34/x
  3. Step 3: Cross multiply
    28,739.80x = 43,080.13 × 15,564.34
  4. Step 4: Simplify right side
    28,739.80x = 670,513,790.56
  5. Step 5: Solve for x
    x = 670,513,790.56/28,739.80
  6. Step 6: Final answer
    x = 23,330.50

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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.