Home / 12,957.90-19,422.12-5,558.58

Finding the Fourth Proportional to 12,957.90, 19,422.12 and 5,558.58

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Solution

The fourth proportional to 12,957.90, 19,422.12 and 5,558.58 is: 8,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,957.90 : 19,422.12 = 5,558.58 : x
  2. Step 2: Convert to fraction form
    12,957.90/19,422.12 = 5,558.58/x
  3. Step 3: Cross multiply
    12,957.90x = 19,422.12 × 5,558.58
  4. Step 4: Simplify right side
    12,957.90x = 107,959,407.79
  5. Step 5: Solve for x
    x = 107,959,407.79/12,957.90
  6. Step 6: Final answer
    x = 8,331.55

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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.