Home / 11,128.95-15,356.46-6,349.56

Finding the Fourth Proportional to 11,128.95, 15,356.46 and 6,349.56

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Solution

The fourth proportional to 11,128.95, 15,356.46 and 6,349.56 is: 8,761.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.95 : 15,356.46 = 6,349.56 : x
  2. Step 2: Convert to fraction form
    11,128.95/15,356.46 = 6,349.56/x
  3. Step 3: Cross multiply
    11,128.95x = 15,356.46 × 6,349.56
  4. Step 4: Simplify right side
    11,128.95x = 97,506,764.16
  5. Step 5: Solve for x
    x = 97,506,764.16/11,128.95
  6. Step 6: Final answer
    x = 8,761.54

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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.