Home / 20,929.86-31,397.37-6,886.29

Finding the Fourth Proportional to 20,929.86, 31,397.37 and 6,886.29

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Solution

The fourth proportional to 20,929.86, 31,397.37 and 6,886.29 is: 10,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.86 : 31,397.37 = 6,886.29 : x
  2. Step 2: Convert to fraction form
    20,929.86/31,397.37 = 6,886.29/x
  3. Step 3: Cross multiply
    20,929.86x = 31,397.37 × 6,886.29
  4. Step 4: Simplify right side
    20,929.86x = 216,211,395.06
  5. Step 5: Solve for x
    x = 216,211,395.06/20,929.86
  6. Step 6: Final answer
    x = 10,330.28

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1.5x scale

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.