Home / 11,155.95-15,395.21-6,440.22

Finding the Fourth Proportional to 11,155.95, 15,395.21 and 6,440.22

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Solution

The fourth proportional to 11,155.95, 15,395.21 and 6,440.22 is: 8,887.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.95 : 15,395.21 = 6,440.22 : x
  2. Step 2: Convert to fraction form
    11,155.95/15,395.21 = 6,440.22/x
  3. Step 3: Cross multiply
    11,155.95x = 15,395.21 × 6,440.22
  4. Step 4: Simplify right side
    11,155.95x = 99,148,507.15
  5. Step 5: Solve for x
    x = 99,148,507.15/11,155.95
  6. Step 6: Final answer
    x = 8,887.50

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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.