Home / 23,002.21-31,730.23-15,831.28

Finding the Fourth Proportional to 23,002.21, 31,730.23 and 15,831.28

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Solution

The fourth proportional to 23,002.21, 31,730.23 and 15,831.28 is: 21,838.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,002.21 : 31,730.23 = 15,831.28 : x
  2. Step 2: Convert to fraction form
    23,002.21/31,730.23 = 15,831.28/x
  3. Step 3: Cross multiply
    23,002.21x = 31,730.23 × 15,831.28
  4. Step 4: Simplify right side
    23,002.21x = 502,330,155.59
  5. Step 5: Solve for x
    x = 502,330,155.59/23,002.21
  6. Step 6: Final answer
    x = 21,838.34

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1.5x scale

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.