Home / 15,398.31-21,246.93-8,684.22

Finding the Fourth Proportional to 15,398.31, 21,246.93 and 8,684.22

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Solution

The fourth proportional to 15,398.31, 21,246.93 and 8,684.22 is: 11,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.31 : 21,246.93 = 8,684.22 : x
  2. Step 2: Convert to fraction form
    15,398.31/21,246.93 = 8,684.22/x
  3. Step 3: Cross multiply
    15,398.31x = 21,246.93 × 8,684.22
  4. Step 4: Simplify right side
    15,398.31x = 184,513,014.44
  5. Step 5: Solve for x
    x = 184,513,014.44/15,398.31
  6. Step 6: Final answer
    x = 11,982.68

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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.