Home / 20,312.97-28,031.96-11,360.63

Finding the Fourth Proportional to 20,312.97, 28,031.96 and 11,360.63

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Solution

The fourth proportional to 20,312.97, 28,031.96 and 11,360.63 is: 15,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.97 : 28,031.96 = 11,360.63 : x
  2. Step 2: Convert to fraction form
    20,312.97/28,031.96 = 11,360.63/x
  3. Step 3: Cross multiply
    20,312.97x = 28,031.96 × 11,360.63
  4. Step 4: Simplify right side
    20,312.97x = 318,460,613.98
  5. Step 5: Solve for x
    x = 318,460,613.98/20,312.97
  6. Step 6: Final answer
    x = 15,677.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.