Home / 28,246.53-38,980.25-15,671.28

Finding the Fourth Proportional to 28,246.53, 38,980.25 and 15,671.28

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Solution

The fourth proportional to 28,246.53, 38,980.25 and 15,671.28 is: 21,626.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.53 : 38,980.25 = 15,671.28 : x
  2. Step 2: Convert to fraction form
    28,246.53/38,980.25 = 15,671.28/x
  3. Step 3: Cross multiply
    28,246.53x = 38,980.25 × 15,671.28
  4. Step 4: Simplify right side
    28,246.53x = 610,870,412.22
  5. Step 5: Solve for x
    x = 610,870,412.22/28,246.53
  6. Step 6: Final answer
    x = 21,626.39

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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.