Home / 11,130.46-15,359.16-6,415.12

Finding the Fourth Proportional to 11,130.46, 15,359.16 and 6,415.12

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Solution

The fourth proportional to 11,130.46, 15,359.16 and 6,415.12 is: 8,852.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.46 : 15,359.16 = 6,415.12 : x
  2. Step 2: Convert to fraction form
    11,130.46/15,359.16 = 6,415.12/x
  3. Step 3: Cross multiply
    11,130.46x = 15,359.16 × 6,415.12
  4. Step 4: Simplify right side
    11,130.46x = 98,530,854.50
  5. Step 5: Solve for x
    x = 98,530,854.50/11,130.46
  6. Step 6: Final answer
    x = 8,852.36

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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.