Home / 14,458.40-21,687.60-13,389.20

Finding the Fourth Proportional to 14,458.40, 21,687.60 and 13,389.20

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Solution

The fourth proportional to 14,458.40, 21,687.60 and 13,389.20 is: 20,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.40 : 21,687.60 = 13,389.20 : x
  2. Step 2: Convert to fraction form
    14,458.40/21,687.60 = 13,389.20/x
  3. Step 3: Cross multiply
    14,458.40x = 21,687.60 × 13,389.20
  4. Step 4: Simplify right side
    14,458.40x = 290,379,613.92
  5. Step 5: Solve for x
    x = 290,379,613.92/14,458.40
  6. Step 6: Final answer
    x = 20,083.80

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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.