Home / 13,396.68-18,485.06-7,730.12

Finding the Fourth Proportional to 13,396.68, 18,485.06 and 7,730.12

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Solution

The fourth proportional to 13,396.68, 18,485.06 and 7,730.12 is: 10,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.68 : 18,485.06 = 7,730.12 : x
  2. Step 2: Convert to fraction form
    13,396.68/18,485.06 = 7,730.12/x
  3. Step 3: Cross multiply
    13,396.68x = 18,485.06 × 7,730.12
  4. Step 4: Simplify right side
    13,396.68x = 142,891,732.01
  5. Step 5: Solve for x
    x = 142,891,732.01/13,396.68
  6. Step 6: Final answer
    x = 10,666.20

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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.