Home / 20,730.39-28,607.94-11,298.96

Finding the Fourth Proportional to 20,730.39, 28,607.94 and 11,298.96

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Solution

The fourth proportional to 20,730.39, 28,607.94 and 11,298.96 is: 15,592.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.39 : 28,607.94 = 11,298.96 : x
  2. Step 2: Convert to fraction form
    20,730.39/28,607.94 = 11,298.96/x
  3. Step 3: Cross multiply
    20,730.39x = 28,607.94 × 11,298.96
  4. Step 4: Simplify right side
    20,730.39x = 323,239,969.74
  5. Step 5: Solve for x
    x = 323,239,969.74/20,730.39
  6. Step 6: Final answer
    x = 15,592.57

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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.