Home / 12,206.40-18,307.56-3,439.32

Finding the Fourth Proportional to 12,206.40, 18,307.56 and 3,439.32

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Solution

The fourth proportional to 12,206.40, 18,307.56 and 3,439.32 is: 5,158.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.40 : 18,307.56 = 3,439.32 : x
  2. Step 2: Convert to fraction form
    12,206.40/18,307.56 = 3,439.32/x
  3. Step 3: Cross multiply
    12,206.40x = 18,307.56 × 3,439.32
  4. Step 4: Simplify right side
    12,206.40x = 62,965,557.26
  5. Step 5: Solve for x
    x = 62,965,557.26/12,206.40
  6. Step 6: Final answer
    x = 5,158.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.