Home / 15,409.18-21,264.32-8,694.63

Finding the Fourth Proportional to 15,409.18, 21,264.32 and 8,694.63

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Solution

The fourth proportional to 15,409.18, 21,264.32 and 8,694.63 is: 11,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.18 : 21,264.32 = 8,694.63 : x
  2. Step 2: Convert to fraction form
    15,409.18/21,264.32 = 8,694.63/x
  3. Step 3: Cross multiply
    15,409.18x = 21,264.32 × 8,694.63
  4. Step 4: Simplify right side
    15,409.18x = 184,885,351.13
  5. Step 5: Solve for x
    x = 184,885,351.13/15,409.18
  6. Step 6: Final answer
    x = 11,998.39

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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.