Home / 15,840.87-21,861.09-8,767.29

Finding the Fourth Proportional to 15,840.87, 21,861.09 and 8,767.29

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Solution

The fourth proportional to 15,840.87, 21,861.09 and 8,767.29 is: 12,099.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.87 : 21,861.09 = 8,767.29 : x
  2. Step 2: Convert to fraction form
    15,840.87/21,861.09 = 8,767.29/x
  3. Step 3: Cross multiply
    15,840.87x = 21,861.09 × 8,767.29
  4. Step 4: Simplify right side
    15,840.87x = 191,662,515.75
  5. Step 5: Solve for x
    x = 191,662,515.75/15,840.87
  6. Step 6: Final answer
    x = 12,099.24

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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.