Home / 18,974.19-28,445.90-14,285.21

Finding the Fourth Proportional to 18,974.19, 28,445.90 and 14,285.21

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Solution

The fourth proportional to 18,974.19, 28,445.90 and 14,285.21 is: 21,416.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.19 : 28,445.90 = 14,285.21 : x
  2. Step 2: Convert to fraction form
    18,974.19/28,445.90 = 14,285.21/x
  3. Step 3: Cross multiply
    18,974.19x = 28,445.90 × 14,285.21
  4. Step 4: Simplify right side
    18,974.19x = 406,355,441.48
  5. Step 5: Solve for x
    x = 406,355,441.48/18,974.19
  6. Step 6: Final answer
    x = 21,416.22

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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.