Home / 13,317.88-18,378.57-7,653.28

Finding the Fourth Proportional to 13,317.88, 18,378.57 and 7,653.28

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Solution

The fourth proportional to 13,317.88, 18,378.57 and 7,653.28 is: 10,561.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.88 : 18,378.57 = 7,653.28 : x
  2. Step 2: Convert to fraction form
    13,317.88/18,378.57 = 7,653.28/x
  3. Step 3: Cross multiply
    13,317.88x = 18,378.57 × 7,653.28
  4. Step 4: Simplify right side
    13,317.88x = 140,656,342.21
  5. Step 5: Solve for x
    x = 140,656,342.21/13,317.88
  6. Step 6: Final answer
    x = 10,561.47

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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.