Home / 13,247.10-18,275.82-7,578.81

Finding the Fourth Proportional to 13,247.10, 18,275.82 and 7,578.81

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Solution

The fourth proportional to 13,247.10, 18,275.82 and 7,578.81 is: 10,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.10 : 18,275.82 = 7,578.81 : x
  2. Step 2: Convert to fraction form
    13,247.10/18,275.82 = 7,578.81/x
  3. Step 3: Cross multiply
    13,247.10x = 18,275.82 × 7,578.81
  4. Step 4: Simplify right side
    13,247.10x = 138,508,967.37
  5. Step 5: Solve for x
    x = 138,508,967.37/13,247.10
  6. Step 6: Final answer
    x = 10,455.80

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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.