Home / 21,207.42-31,811.13-7,167.51

Finding the Fourth Proportional to 21,207.42, 31,811.13 and 7,167.51

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Solution

The fourth proportional to 21,207.42, 31,811.13 and 7,167.51 is: 10,751.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.42 : 31,811.13 = 7,167.51 : x
  2. Step 2: Convert to fraction form
    21,207.42/31,811.13 = 7,167.51/x
  3. Step 3: Cross multiply
    21,207.42x = 31,811.13 × 7,167.51
  4. Step 4: Simplify right side
    21,207.42x = 228,006,592.39
  5. Step 5: Solve for x
    x = 228,006,592.39/21,207.42
  6. Step 6: Final answer
    x = 10,751.27

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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.