Home / 15,688.17-21,648.92-8,517.92

Finding the Fourth Proportional to 15,688.17, 21,648.92 and 8,517.92

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Solution

The fourth proportional to 15,688.17, 21,648.92 and 8,517.92 is: 11,754.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.17 : 21,648.92 = 8,517.92 : x
  2. Step 2: Convert to fraction form
    15,688.17/21,648.92 = 8,517.92/x
  3. Step 3: Cross multiply
    15,688.17x = 21,648.92 × 8,517.92
  4. Step 4: Simplify right side
    15,688.17x = 184,403,617.81
  5. Step 5: Solve for x
    x = 184,403,617.81/15,688.17
  6. Step 6: Final answer
    x = 11,754.31

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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.