Home / 13,270.67-18,293.90-8,490.11

Finding the Fourth Proportional to 13,270.67, 18,293.90 and 8,490.11

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Solution

The fourth proportional to 13,270.67, 18,293.90 and 8,490.11 is: 11,703.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.67 : 18,293.90 = 8,490.11 : x
  2. Step 2: Convert to fraction form
    13,270.67/18,293.90 = 8,490.11/x
  3. Step 3: Cross multiply
    13,270.67x = 18,293.90 × 8,490.11
  4. Step 4: Simplify right side
    13,270.67x = 155,317,089.41
  5. Step 5: Solve for x
    x = 155,317,089.41/13,270.67
  6. Step 6: Final answer
    x = 11,703.79

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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.