Home / 21,132.08-31,697.40-6,340.40

Finding the Fourth Proportional to 21,132.08, 31,697.40 and 6,340.40

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Solution

The fourth proportional to 21,132.08, 31,697.40 and 6,340.40 is: 9,510.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.08 : 31,697.40 = 6,340.40 : x
  2. Step 2: Convert to fraction form
    21,132.08/31,697.40 = 6,340.40/x
  3. Step 3: Cross multiply
    21,132.08x = 31,697.40 × 6,340.40
  4. Step 4: Simplify right side
    21,132.08x = 200,974,194.96
  5. Step 5: Solve for x
    x = 200,974,194.96/21,132.08
  6. Step 6: Final answer
    x = 9,510.38

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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.