Home / 20,953.20-31,392.87-11,070.66

Finding the Fourth Proportional to 20,953.20, 31,392.87 and 11,070.66

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Solution

The fourth proportional to 20,953.20, 31,392.87 and 11,070.66 is: 16,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.20 : 31,392.87 = 11,070.66 : x
  2. Step 2: Convert to fraction form
    20,953.20/31,392.87 = 11,070.66/x
  3. Step 3: Cross multiply
    20,953.20x = 31,392.87 × 11,070.66
  4. Step 4: Simplify right side
    20,953.20x = 347,539,790.19
  5. Step 5: Solve for x
    x = 347,539,790.19/20,953.20
  6. Step 6: Final answer
    x = 16,586.48

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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.