Home / 19,511.68-26,905.32-15,730.84

Finding the Fourth Proportional to 19,511.68, 26,905.32 and 15,730.84

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Solution

The fourth proportional to 19,511.68, 26,905.32 and 15,730.84 is: 21,691.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.68 : 26,905.32 = 15,730.84 : x
  2. Step 2: Convert to fraction form
    19,511.68/26,905.32 = 15,730.84/x
  3. Step 3: Cross multiply
    19,511.68x = 26,905.32 × 15,730.84
  4. Step 4: Simplify right side
    19,511.68x = 423,243,284.07
  5. Step 5: Solve for x
    x = 423,243,284.07/19,511.68
  6. Step 6: Final answer
    x = 21,691.79

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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.