Home / 18,929.43-28,362.75-11,511.45

Finding the Fourth Proportional to 18,929.43, 28,362.75 and 11,511.45

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Solution

The fourth proportional to 18,929.43, 28,362.75 and 11,511.45 is: 17,248.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.43 : 28,362.75 = 11,511.45 : x
  2. Step 2: Convert to fraction form
    18,929.43/28,362.75 = 11,511.45/x
  3. Step 3: Cross multiply
    18,929.43x = 28,362.75 × 11,511.45
  4. Step 4: Simplify right side
    18,929.43x = 326,496,293.71
  5. Step 5: Solve for x
    x = 326,496,293.71/18,929.43
  6. Step 6: Final answer
    x = 17,248.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.