Home / 19,766.64-27,278.04-12,693.12

Finding the Fourth Proportional to 19,766.64, 27,278.04 and 12,693.12

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Solution

The fourth proportional to 19,766.64, 27,278.04 and 12,693.12 is: 17,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.64 : 27,278.04 = 12,693.12 : x
  2. Step 2: Convert to fraction form
    19,766.64/27,278.04 = 12,693.12/x
  3. Step 3: Cross multiply
    19,766.64x = 27,278.04 × 12,693.12
  4. Step 4: Simplify right side
    19,766.64x = 346,243,435.08
  5. Step 5: Solve for x
    x = 346,243,435.08/19,766.64
  6. Step 6: Final answer
    x = 17,516.55

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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.