Home / 20,298.32-28,007.88-11,911.76

Finding the Fourth Proportional to 20,298.32, 28,007.88 and 11,911.76

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Solution

The fourth proportional to 20,298.32, 28,007.88 and 11,911.76 is: 16,436.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.32 : 28,007.88 = 11,911.76 : x
  2. Step 2: Convert to fraction form
    20,298.32/28,007.88 = 11,911.76/x
  3. Step 3: Cross multiply
    20,298.32x = 28,007.88 × 11,911.76
  4. Step 4: Simplify right side
    20,298.32x = 333,623,144.67
  5. Step 5: Solve for x
    x = 333,623,144.67/20,298.32
  6. Step 6: Final answer
    x = 16,436.00

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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.