Home / 20,397.87-28,126.58-14,099.31

Finding the Fourth Proportional to 20,397.87, 28,126.58 and 14,099.31

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Solution

The fourth proportional to 20,397.87, 28,126.58 and 14,099.31 is: 19,441.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.87 : 28,126.58 = 14,099.31 : x
  2. Step 2: Convert to fraction form
    20,397.87/28,126.58 = 14,099.31/x
  3. Step 3: Cross multiply
    20,397.87x = 28,126.58 × 14,099.31
  4. Step 4: Simplify right side
    20,397.87x = 396,565,300.16
  5. Step 5: Solve for x
    x = 396,565,300.16/20,397.87
  6. Step 6: Final answer
    x = 19,441.51

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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.