Home / 15,314.59-21,135.50-9,025.75

Finding the Fourth Proportional to 15,314.59, 21,135.50 and 9,025.75

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Solution

The fourth proportional to 15,314.59, 21,135.50 and 9,025.75 is: 12,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.59 : 21,135.50 = 9,025.75 : x
  2. Step 2: Convert to fraction form
    15,314.59/21,135.50 = 9,025.75/x
  3. Step 3: Cross multiply
    15,314.59x = 21,135.50 × 9,025.75
  4. Step 4: Simplify right side
    15,314.59x = 190,763,739.13
  5. Step 5: Solve for x
    x = 190,763,739.13/15,314.59
  6. Step 6: Final answer
    x = 12,456.34

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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.