Home / 15,409.17-21,263.45-8,696.43

Finding the Fourth Proportional to 15,409.17, 21,263.45 and 8,696.43

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Solution

The fourth proportional to 15,409.17, 21,263.45 and 8,696.43 is: 12,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.17 : 21,263.45 = 8,696.43 : x
  2. Step 2: Convert to fraction form
    15,409.17/21,263.45 = 8,696.43/x
  3. Step 3: Cross multiply
    15,409.17x = 21,263.45 × 8,696.43
  4. Step 4: Simplify right side
    15,409.17x = 184,916,061.00
  5. Step 5: Solve for x
    x = 184,916,061.00/15,409.17
  6. Step 6: Final answer
    x = 12,000.39

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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.