Home / 21,308.08-31,955.64-10,209.04

Finding the Fourth Proportional to 21,308.08, 31,955.64 and 10,209.04

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Solution

The fourth proportional to 21,308.08, 31,955.64 and 10,209.04 is: 15,310.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.08 : 31,955.64 = 10,209.04 : x
  2. Step 2: Convert to fraction form
    21,308.08/31,955.64 = 10,209.04/x
  3. Step 3: Cross multiply
    21,308.08x = 31,955.64 × 10,209.04
  4. Step 4: Simplify right side
    21,308.08x = 326,236,406.99
  5. Step 5: Solve for x
    x = 326,236,406.99/21,308.08
  6. Step 6: Final answer
    x = 15,310.46

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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.