Home / 20,938.89-31,411.76-6,148.29

Finding the Fourth Proportional to 20,938.89, 31,411.76 and 6,148.29

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Solution

The fourth proportional to 20,938.89, 31,411.76 and 6,148.29 is: 9,223.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.89 : 31,411.76 = 6,148.29 : x
  2. Step 2: Convert to fraction form
    20,938.89/31,411.76 = 6,148.29/x
  3. Step 3: Cross multiply
    20,938.89x = 31,411.76 × 6,148.29
  4. Step 4: Simplify right side
    20,938.89x = 193,128,579.15
  5. Step 5: Solve for x
    x = 193,128,579.15/20,938.89
  6. Step 6: Final answer
    x = 9,223.44

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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.