Home / 21,210.08-31,808.64-10,110.92

Finding the Fourth Proportional to 21,210.08, 31,808.64 and 10,110.92

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Solution

The fourth proportional to 21,210.08, 31,808.64 and 10,110.92 is: 15,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.08 : 31,808.64 = 10,110.92 : x
  2. Step 2: Convert to fraction form
    21,210.08/31,808.64 = 10,110.92/x
  3. Step 3: Cross multiply
    21,210.08x = 31,808.64 × 10,110.92
  4. Step 4: Simplify right side
    21,210.08x = 321,614,614.35
  5. Step 5: Solve for x
    x = 321,614,614.35/21,210.08
  6. Step 6: Final answer
    x = 15,163.29

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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.