Home / 19,171.95-26,479.45-12,787.46

Finding the Fourth Proportional to 19,171.95, 26,479.45 and 12,787.46

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Solution

The fourth proportional to 19,171.95, 26,479.45 and 12,787.46 is: 17,661.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.95 : 26,479.45 = 12,787.46 : x
  2. Step 2: Convert to fraction form
    19,171.95/26,479.45 = 12,787.46/x
  3. Step 3: Cross multiply
    19,171.95x = 26,479.45 × 12,787.46
  4. Step 4: Simplify right side
    19,171.95x = 338,604,743.33
  5. Step 5: Solve for x
    x = 338,604,743.33/19,171.95
  6. Step 6: Final answer
    x = 17,661.47

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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.