Home / 28,115,143.75-38,787,452.06-18,322,020.19

Finding the Fourth Proportional to 28,115,143.75, 38,787,452.06 and 18,322,020.19

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Solution

The fourth proportional to 28,115,143.75, 38,787,452.06 and 18,322,020.19 is: 25,276,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115,143.75 : 38,787,452.06 = 18,322,020.19 : x
  2. Step 2: Convert to fraction form
    28,115,143.75/38,787,452.06 = 18,322,020.19/x
  3. Step 3: Cross multiply
    28,115,143.75x = 38,787,452.06 × 18,322,020.19
  4. Step 4: Simplify right side
    28,115,143.75x = 710,664,479,761,977.12
  5. Step 5: Solve for x
    x = 710,664,479,761,977.12/28,115,143.75
  6. Step 6: Final answer
    x = 25,276,928.55

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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.