Home / 13,366.87-18,445.99-7,398.18

Finding the Fourth Proportional to 13,366.87, 18,445.99 and 7,398.18

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Solution

The fourth proportional to 13,366.87, 18,445.99 and 7,398.18 is: 10,209.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.87 : 18,445.99 = 7,398.18 : x
  2. Step 2: Convert to fraction form
    13,366.87/18,445.99 = 7,398.18/x
  3. Step 3: Cross multiply
    13,366.87x = 18,445.99 × 7,398.18
  4. Step 4: Simplify right side
    13,366.87x = 136,466,754.30
  5. Step 5: Solve for x
    x = 136,466,754.30/13,366.87
  6. Step 6: Final answer
    x = 10,209.33

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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.