Home / 12,569.79-18,848.19-5,172.87

Finding the Fourth Proportional to 12,569.79, 18,848.19 and 5,172.87

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Solution

The fourth proportional to 12,569.79, 18,848.19 and 5,172.87 is: 7,756.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,569.79 : 18,848.19 = 5,172.87 : x
  2. Step 2: Convert to fraction form
    12,569.79/18,848.19 = 5,172.87/x
  3. Step 3: Cross multiply
    12,569.79x = 18,848.19 × 5,172.87
  4. Step 4: Simplify right side
    12,569.79x = 97,499,236.61
  5. Step 5: Solve for x
    x = 97,499,236.61/12,569.79
  6. Step 6: Final answer
    x = 7,756.63

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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.