Home / 12,645.24-18,970.74-3,881.40

Finding the Fourth Proportional to 12,645.24, 18,970.74 and 3,881.40

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Solution

The fourth proportional to 12,645.24, 18,970.74 and 3,881.40 is: 5,822.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.24 : 18,970.74 = 3,881.40 : x
  2. Step 2: Convert to fraction form
    12,645.24/18,970.74 = 3,881.40/x
  3. Step 3: Cross multiply
    12,645.24x = 18,970.74 × 3,881.40
  4. Step 4: Simplify right side
    12,645.24x = 73,633,030.24
  5. Step 5: Solve for x
    x = 73,633,030.24/12,645.24
  6. Step 6: Final answer
    x = 5,822.98

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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.