Home / 12,618.12-18,767.10-12,355.68

Finding the Fourth Proportional to 12,618.12, 18,767.10 and 12,355.68

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Solution

The fourth proportional to 12,618.12, 18,767.10 and 12,355.68 is: 18,376.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.12 : 18,767.10 = 12,355.68 : x
  2. Step 2: Convert to fraction form
    12,618.12/18,767.10 = 12,355.68/x
  3. Step 3: Cross multiply
    12,618.12x = 18,767.10 × 12,355.68
  4. Step 4: Simplify right side
    12,618.12x = 231,880,282.13
  5. Step 5: Solve for x
    x = 231,880,282.13/12,618.12
  6. Step 6: Final answer
    x = 18,376.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.