Home / 31,541.13-47,311.70-12,831.34

Finding the Fourth Proportional to 31,541.13, 47,311.70 and 12,831.34

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Solution

The fourth proportional to 31,541.13, 47,311.70 and 12,831.34 is: 19,247.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,541.13 : 47,311.70 = 12,831.34 : x
  2. Step 2: Convert to fraction form
    31,541.13/47,311.70 = 12,831.34/x
  3. Step 3: Cross multiply
    31,541.13x = 47,311.70 × 12,831.34
  4. Step 4: Simplify right side
    31,541.13x = 607,072,444.52
  5. Step 5: Solve for x
    x = 607,072,444.52/31,541.13
  6. Step 6: Final answer
    x = 19,247.01

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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.