Home / 39,718.81-59,586.78-13,422.97

Finding the Fourth Proportional to 39,718.81, 59,586.78 and 13,422.97

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Solution

The fourth proportional to 39,718.81, 59,586.78 and 13,422.97 is: 20,137.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.81 : 59,586.78 = 13,422.97 : x
  2. Step 2: Convert to fraction form
    39,718.81/59,586.78 = 13,422.97/x
  3. Step 3: Cross multiply
    39,718.81x = 59,586.78 × 13,422.97
  4. Step 4: Simplify right side
    39,718.81x = 799,831,560.34
  5. Step 5: Solve for x
    x = 799,831,560.34/39,718.81
  6. Step 6: Final answer
    x = 20,137.35

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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.