Home / 13,280.11-18,326.41-7,311.66

Finding the Fourth Proportional to 13,280.11, 18,326.41 and 7,311.66

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Solution

The fourth proportional to 13,280.11, 18,326.41 and 7,311.66 is: 10,090.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.11 : 18,326.41 = 7,311.66 : x
  2. Step 2: Convert to fraction form
    13,280.11/18,326.41 = 7,311.66/x
  3. Step 3: Cross multiply
    13,280.11x = 18,326.41 × 7,311.66
  4. Step 4: Simplify right side
    13,280.11x = 133,996,478.94
  5. Step 5: Solve for x
    x = 133,996,478.94/13,280.11
  6. Step 6: Final answer
    x = 10,090.01

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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.