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Finding the Fourth Proportional to 20,903.66, 28,848.55 and 11,950.93

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Solution

The fourth proportional to 20,903.66, 28,848.55 and 11,950.93 is: 16,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.66 : 28,848.55 = 11,950.93 : x
  2. Step 2: Convert to fraction form
    20,903.66/28,848.55 = 11,950.93/x
  3. Step 3: Cross multiply
    20,903.66x = 28,848.55 × 11,950.93
  4. Step 4: Simplify right side
    20,903.66x = 344,767,001.65
  5. Step 5: Solve for x
    x = 344,767,001.65/20,903.66
  6. Step 6: Final answer
    x = 16,493.14

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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.