Home / 12,885.63-19,327.80-7,551.78

Finding the Fourth Proportional to 12,885.63, 19,327.80 and 7,551.78

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Solution

The fourth proportional to 12,885.63, 19,327.80 and 7,551.78 is: 11,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.63 : 19,327.80 = 7,551.78 : x
  2. Step 2: Convert to fraction form
    12,885.63/19,327.80 = 7,551.78/x
  3. Step 3: Cross multiply
    12,885.63x = 19,327.80 × 7,551.78
  4. Step 4: Simplify right side
    12,885.63x = 145,959,293.48
  5. Step 5: Solve for x
    x = 145,959,293.48/12,885.63
  6. Step 6: Final answer
    x = 11,327.29

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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.