Home / 21,202.04-31,806.40-6,409.12

Finding the Fourth Proportional to 21,202.04, 31,806.40 and 6,409.12

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Solution

The fourth proportional to 21,202.04, 31,806.40 and 6,409.12 is: 9,614.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.04 : 31,806.40 = 6,409.12 : x
  2. Step 2: Convert to fraction form
    21,202.04/31,806.40 = 6,409.12/x
  3. Step 3: Cross multiply
    21,202.04x = 31,806.40 × 6,409.12
  4. Step 4: Simplify right side
    21,202.04x = 203,851,034.37
  5. Step 5: Solve for x
    x = 203,851,034.37/21,202.04
  6. Step 6: Final answer
    x = 9,614.69

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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.