Home / 15,623.73-21,558.18-8,909.49

Finding the Fourth Proportional to 15,623.73, 21,558.18 and 8,909.49

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Solution

The fourth proportional to 15,623.73, 21,558.18 and 8,909.49 is: 12,293.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.73 : 21,558.18 = 8,909.49 : x
  2. Step 2: Convert to fraction form
    15,623.73/21,558.18 = 8,909.49/x
  3. Step 3: Cross multiply
    15,623.73x = 21,558.18 × 8,909.49
  4. Step 4: Simplify right side
    15,623.73x = 192,072,389.13
  5. Step 5: Solve for x
    x = 192,072,389.13/15,623.73
  6. Step 6: Final answer
    x = 12,293.63

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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.