Home / 20,966.30-28,926.98-12,012.08

Finding the Fourth Proportional to 20,966.30, 28,926.98 and 12,012.08

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Solution

The fourth proportional to 20,966.30, 28,926.98 and 12,012.08 is: 16,572.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.30 : 28,926.98 = 12,012.08 : x
  2. Step 2: Convert to fraction form
    20,966.30/28,926.98 = 12,012.08/x
  3. Step 3: Cross multiply
    20,966.30x = 28,926.98 × 12,012.08
  4. Step 4: Simplify right side
    20,966.30x = 347,472,993.22
  5. Step 5: Solve for x
    x = 347,472,993.22/20,966.30
  6. Step 6: Final answer
    x = 16,572.93

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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.