Home / 13,578.87-18,631.26-13,345.91

Finding the Fourth Proportional to 13,578.87, 18,631.26 and 13,345.91

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Solution

The fourth proportional to 13,578.87, 18,631.26 and 13,345.91 is: 18,311.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.87 : 18,631.26 = 13,345.91 : x
  2. Step 2: Convert to fraction form
    13,578.87/18,631.26 = 13,345.91/x
  3. Step 3: Cross multiply
    13,578.87x = 18,631.26 × 13,345.91
  4. Step 4: Simplify right side
    13,578.87x = 248,650,959.26
  5. Step 5: Solve for x
    x = 248,650,959.26/13,578.87
  6. Step 6: Final answer
    x = 18,311.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.