Home / 42,421.92-63,632.81-10,831.96

Finding the Fourth Proportional to 42,421.92, 63,632.81 and 10,831.96

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Solution

The fourth proportional to 42,421.92, 63,632.81 and 10,831.96 is: 16,247.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,421.92 : 63,632.81 = 10,831.96 : x
  2. Step 2: Convert to fraction form
    42,421.92/63,632.81 = 10,831.96/x
  3. Step 3: Cross multiply
    42,421.92x = 63,632.81 × 10,831.96
  4. Step 4: Simplify right side
    42,421.92x = 689,267,998.45
  5. Step 5: Solve for x
    x = 689,267,998.45/42,421.92
  6. Step 6: Final answer
    x = 16,247.92

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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.