Home / 21,145.22-31,715.30-5,564.06

Finding the Fourth Proportional to 21,145.22, 31,715.30 and 5,564.06

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Solution

The fourth proportional to 21,145.22, 31,715.30 and 5,564.06 is: 8,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.22 : 31,715.30 = 5,564.06 : x
  2. Step 2: Convert to fraction form
    21,145.22/31,715.30 = 5,564.06/x
  3. Step 3: Cross multiply
    21,145.22x = 31,715.30 × 5,564.06
  4. Step 4: Simplify right side
    21,145.22x = 176,465,832.12
  5. Step 5: Solve for x
    x = 176,465,832.12/21,145.22
  6. Step 6: Final answer
    x = 8,345.42

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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.