Home / 10,961.90-15,127.57-6,485.54

Finding the Fourth Proportional to 10,961.90, 15,127.57 and 6,485.54

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Solution

The fourth proportional to 10,961.90, 15,127.57 and 6,485.54 is: 8,950.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.90 : 15,127.57 = 6,485.54 : x
  2. Step 2: Convert to fraction form
    10,961.90/15,127.57 = 6,485.54/x
  3. Step 3: Cross multiply
    10,961.90x = 15,127.57 × 6,485.54
  4. Step 4: Simplify right side
    10,961.90x = 98,110,449.54
  5. Step 5: Solve for x
    x = 98,110,449.54/10,961.90
  6. Step 6: Final answer
    x = 8,950.13

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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.