Home / 20,904.83-28,849.16-11,953.17

Finding the Fourth Proportional to 20,904.83, 28,849.16 and 11,953.17

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Solution

The fourth proportional to 20,904.83, 28,849.16 and 11,953.17 is: 16,495.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.83 : 28,849.16 = 11,953.17 : x
  2. Step 2: Convert to fraction form
    20,904.83/28,849.16 = 11,953.17/x
  3. Step 3: Cross multiply
    20,904.83x = 28,849.16 × 11,953.17
  4. Step 4: Simplify right side
    20,904.83x = 344,838,913.84
  5. Step 5: Solve for x
    x = 344,838,913.84/20,904.83
  6. Step 6: Final answer
    x = 16,495.66

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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.