Home / 31,541.63-47,312.45-12,831.84

Finding the Fourth Proportional to 31,541.63, 47,312.45 and 12,831.84

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Solution

The fourth proportional to 31,541.63, 47,312.45 and 12,831.84 is: 19,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,541.63 : 47,312.45 = 12,831.84 : x
  2. Step 2: Convert to fraction form
    31,541.63/47,312.45 = 12,831.84/x
  3. Step 3: Cross multiply
    31,541.63x = 47,312.45 × 12,831.84
  4. Step 4: Simplify right side
    31,541.63x = 607,105,724.25
  5. Step 5: Solve for x
    x = 607,105,724.25/31,541.63
  6. Step 6: Final answer
    x = 19,247.76

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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.