Home / 20,961.60-31,440.24-7,110.24

Finding the Fourth Proportional to 20,961.60, 31,440.24 and 7,110.24

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Solution

The fourth proportional to 20,961.60, 31,440.24 and 7,110.24 is: 10,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.60 : 31,440.24 = 7,110.24 : x
  2. Step 2: Convert to fraction form
    20,961.60/31,440.24 = 7,110.24/x
  3. Step 3: Cross multiply
    20,961.60x = 31,440.24 × 7,110.24
  4. Step 4: Simplify right side
    20,961.60x = 223,547,652.06
  5. Step 5: Solve for x
    x = 223,547,652.06/20,961.60
  6. Step 6: Final answer
    x = 10,664.63

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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.