Home / 28,321.52-39,085.08-15,746

Finding the Fourth Proportional to 28,321.52, 39,085.08 and 15,746

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Solution

The fourth proportional to 28,321.52, 39,085.08 and 15,746 is: 21,730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.52 : 39,085.08 = 15,746 : x
  2. Step 2: Convert to fraction form
    28,321.52/39,085.08 = 15,746/x
  3. Step 3: Cross multiply
    28,321.52x = 39,085.08 × 15,746
  4. Step 4: Simplify right side
    28,321.52x = 615,433,669.68
  5. Step 5: Solve for x
    x = 615,433,669.68/28,321.52
  6. Step 6: Final answer
    x = 21,730.25

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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.