Home / 20,312.67-28,029.13-11,359.94

Finding the Fourth Proportional to 20,312.67, 28,029.13 and 11,359.94

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Solution

The fourth proportional to 20,312.67, 28,029.13 and 11,359.94 is: 15,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.67 : 28,029.13 = 11,359.94 : x
  2. Step 2: Convert to fraction form
    20,312.67/28,029.13 = 11,359.94/x
  3. Step 3: Cross multiply
    20,312.67x = 28,029.13 × 11,359.94
  4. Step 4: Simplify right side
    20,312.67x = 318,409,276.73
  5. Step 5: Solve for x
    x = 318,409,276.73/20,312.67
  6. Step 6: Final answer
    x = 15,675.40

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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.