Home / 13,272.61-18,318.30-9,699.30

Finding the Fourth Proportional to 13,272.61, 18,318.30 and 9,699.30

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Solution

The fourth proportional to 13,272.61, 18,318.30 and 9,699.30 is: 13,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.61 : 18,318.30 = 9,699.30 : x
  2. Step 2: Convert to fraction form
    13,272.61/18,318.30 = 9,699.30/x
  3. Step 3: Cross multiply
    13,272.61x = 18,318.30 × 9,699.30
  4. Step 4: Simplify right side
    13,272.61x = 177,674,687.19
  5. Step 5: Solve for x
    x = 177,674,687.19/13,272.61
  6. Step 6: Final answer
    x = 13,386.57

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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.