Home / 15,106.89-20,847.18-8,392.14

Finding the Fourth Proportional to 15,106.89, 20,847.18 and 8,392.14

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Solution

The fourth proportional to 15,106.89, 20,847.18 and 8,392.14 is: 11,580.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.89 : 20,847.18 = 8,392.14 : x
  2. Step 2: Convert to fraction form
    15,106.89/20,847.18 = 8,392.14/x
  3. Step 3: Cross multiply
    15,106.89x = 20,847.18 × 8,392.14
  4. Step 4: Simplify right side
    15,106.89x = 174,952,453.17
  5. Step 5: Solve for x
    x = 174,952,453.17/15,106.89
  6. Step 6: Final answer
    x = 11,580.97

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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.