Home / 15,397.59-21,248.83-8,682.90

Finding the Fourth Proportional to 15,397.59, 21,248.83 and 8,682.90

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Solution

The fourth proportional to 15,397.59, 21,248.83 and 8,682.90 is: 11,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.59 : 21,248.83 = 8,682.90 : x
  2. Step 2: Convert to fraction form
    15,397.59/21,248.83 = 8,682.90/x
  3. Step 3: Cross multiply
    15,397.59x = 21,248.83 × 8,682.90
  4. Step 4: Simplify right side
    15,397.59x = 184,501,397.18
  5. Step 5: Solve for x
    x = 184,501,397.18/15,397.59
  6. Step 6: Final answer
    x = 11,982.48

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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.