Home / 13,317.12-18,378.51-7,653.69

Finding the Fourth Proportional to 13,317.12, 18,378.51 and 7,653.69

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Solution

The fourth proportional to 13,317.12, 18,378.51 and 7,653.69 is: 10,562.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.12 : 18,378.51 = 7,653.69 : x
  2. Step 2: Convert to fraction form
    13,317.12/18,378.51 = 7,653.69/x
  3. Step 3: Cross multiply
    13,317.12x = 18,378.51 × 7,653.69
  4. Step 4: Simplify right side
    13,317.12x = 140,663,418.20
  5. Step 5: Solve for x
    x = 140,663,418.20/13,317.12
  6. Step 6: Final answer
    x = 10,562.60

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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.