Home / 12,931.51-19,400.31-4,166.11

Finding the Fourth Proportional to 12,931.51, 19,400.31 and 4,166.11

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Solution

The fourth proportional to 12,931.51, 19,400.31 and 4,166.11 is: 6,250.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.51 : 19,400.31 = 4,166.11 : x
  2. Step 2: Convert to fraction form
    12,931.51/19,400.31 = 4,166.11/x
  3. Step 3: Cross multiply
    12,931.51x = 19,400.31 × 4,166.11
  4. Step 4: Simplify right side
    12,931.51x = 80,823,825.49
  5. Step 5: Solve for x
    x = 80,823,825.49/12,931.51
  6. Step 6: Final answer
    x = 6,250.15

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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.