Home / 31,875.12-47,831.90-11,113.20

Finding the Fourth Proportional to 31,875.12, 47,831.90 and 11,113.20

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Solution

The fourth proportional to 31,875.12, 47,831.90 and 11,113.20 is: 16,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,875.12 : 47,831.90 = 11,113.20 : x
  2. Step 2: Convert to fraction form
    31,875.12/47,831.90 = 11,113.20/x
  3. Step 3: Cross multiply
    31,875.12x = 47,831.90 × 11,113.20
  4. Step 4: Simplify right side
    31,875.12x = 531,565,471.08
  5. Step 5: Solve for x
    x = 531,565,471.08/31,875.12
  6. Step 6: Final answer
    x = 16,676.50

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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.