Home / 20,947.10-31,420.64-6,156.02

Finding the Fourth Proportional to 20,947.10, 31,420.64 and 6,156.02

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Solution

The fourth proportional to 20,947.10, 31,420.64 and 6,156.02 is: 9,234.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.10 : 31,420.64 = 6,156.02 : x
  2. Step 2: Convert to fraction form
    20,947.10/31,420.64 = 6,156.02/x
  3. Step 3: Cross multiply
    20,947.10x = 31,420.64 × 6,156.02
  4. Step 4: Simplify right side
    20,947.10x = 193,426,182.19
  5. Step 5: Solve for x
    x = 193,426,182.19/20,947.10
  6. Step 6: Final answer
    x = 9,234.03

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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.