Home / 20,935.06-28,890.93-11,503.87

Finding the Fourth Proportional to 20,935.06, 28,890.93 and 11,503.87

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Solution

The fourth proportional to 20,935.06, 28,890.93 and 11,503.87 is: 15,875.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.06 : 28,890.93 = 11,503.87 : x
  2. Step 2: Convert to fraction form
    20,935.06/28,890.93 = 11,503.87/x
  3. Step 3: Cross multiply
    20,935.06x = 28,890.93 × 11,503.87
  4. Step 4: Simplify right side
    20,935.06x = 332,357,502.90
  5. Step 5: Solve for x
    x = 332,357,502.90/20,935.06
  6. Step 6: Final answer
    x = 15,875.64

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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.