Home / 18,829.71-25,985.12-10,871.91

Finding the Fourth Proportional to 18,829.71, 25,985.12 and 10,871.91

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Solution

The fourth proportional to 18,829.71, 25,985.12 and 10,871.91 is: 15,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.71 : 25,985.12 = 10,871.91 : x
  2. Step 2: Convert to fraction form
    18,829.71/25,985.12 = 10,871.91/x
  3. Step 3: Cross multiply
    18,829.71x = 25,985.12 × 10,871.91
  4. Step 4: Simplify right side
    18,829.71x = 282,507,831.62
  5. Step 5: Solve for x
    x = 282,507,831.62/18,829.71
  6. Step 6: Final answer
    x = 15,003.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.