Home / 21,206.04-31,811.28-7,167.72

Finding the Fourth Proportional to 21,206.04, 31,811.28 and 7,167.72

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Solution

The fourth proportional to 21,206.04, 31,811.28 and 7,167.72 is: 10,752.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.04 : 31,811.28 = 7,167.72 : x
  2. Step 2: Convert to fraction form
    21,206.04/31,811.28 = 7,167.72/x
  3. Step 3: Cross multiply
    21,206.04x = 31,811.28 × 7,167.72
  4. Step 4: Simplify right side
    21,206.04x = 228,014,347.88
  5. Step 5: Solve for x
    x = 228,014,347.88/21,206.04
  6. Step 6: Final answer
    x = 10,752.33

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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.