Home / 20,945.74-31,411.95-6,903.15

Finding the Fourth Proportional to 20,945.74, 31,411.95 and 6,903.15

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Solution

The fourth proportional to 20,945.74, 31,411.95 and 6,903.15 is: 10,352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.74 : 31,411.95 = 6,903.15 : x
  2. Step 2: Convert to fraction form
    20,945.74/31,411.95 = 6,903.15/x
  3. Step 3: Cross multiply
    20,945.74x = 31,411.95 × 6,903.15
  4. Step 4: Simplify right side
    20,945.74x = 216,841,402.64
  5. Step 5: Solve for x
    x = 216,841,402.64/20,945.74
  6. Step 6: Final answer
    x = 10,352.53

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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.