Home / 13,280.90-18,326.96-7,311.43

Finding the Fourth Proportional to 13,280.90, 18,326.96 and 7,311.43

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Solution

The fourth proportional to 13,280.90, 18,326.96 and 7,311.43 is: 10,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.90 : 18,326.96 = 7,311.43 : x
  2. Step 2: Convert to fraction form
    13,280.90/18,326.96 = 7,311.43/x
  3. Step 3: Cross multiply
    13,280.90x = 18,326.96 × 7,311.43
  4. Step 4: Simplify right side
    13,280.90x = 133,996,298.92
  5. Step 5: Solve for x
    x = 133,996,298.92/13,280.90
  6. Step 6: Final answer
    x = 10,089.40

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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.