Home / 15,319.17-21,144.83-9,269.40

Finding the Fourth Proportional to 15,319.17, 21,144.83 and 9,269.40

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Solution

The fourth proportional to 15,319.17, 21,144.83 and 9,269.40 is: 12,794.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.17 : 21,144.83 = 9,269.40 : x
  2. Step 2: Convert to fraction form
    15,319.17/21,144.83 = 9,269.40/x
  3. Step 3: Cross multiply
    15,319.17x = 21,144.83 × 9,269.40
  4. Step 4: Simplify right side
    15,319.17x = 195,999,840.86
  5. Step 5: Solve for x
    x = 195,999,840.86/15,319.17
  6. Step 6: Final answer
    x = 12,794.42

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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.