Home / 20,929.32-31,341.78-14,659.92

Finding the Fourth Proportional to 20,929.32, 31,341.78 and 14,659.92

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Solution

The fourth proportional to 20,929.32, 31,341.78 and 14,659.92 is: 21,953.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.32 : 31,341.78 = 14,659.92 : x
  2. Step 2: Convert to fraction form
    20,929.32/31,341.78 = 14,659.92/x
  3. Step 3: Cross multiply
    20,929.32x = 31,341.78 × 14,659.92
  4. Step 4: Simplify right side
    20,929.32x = 459,467,987.46
  5. Step 5: Solve for x
    x = 459,467,987.46/20,929.32
  6. Step 6: Final answer
    x = 21,953.32

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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.