Home / 28,976.32-39,973.14-18,900.16

Finding the Fourth Proportional to 28,976.32, 39,973.14 and 18,900.16

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Solution

The fourth proportional to 28,976.32, 39,973.14 and 18,900.16 is: 26,072.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.32 : 39,973.14 = 18,900.16 : x
  2. Step 2: Convert to fraction form
    28,976.32/39,973.14 = 18,900.16/x
  3. Step 3: Cross multiply
    28,976.32x = 39,973.14 × 18,900.16
  4. Step 4: Simplify right side
    28,976.32x = 755,498,741.70
  5. Step 5: Solve for x
    x = 755,498,741.70/28,976.32
  6. Step 6: Final answer
    x = 26,072.97

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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.