Home / 15,403.89-21,262.82-9,116.25

Finding the Fourth Proportional to 15,403.89, 21,262.82 and 9,116.25

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Solution

The fourth proportional to 15,403.89, 21,262.82 and 9,116.25 is: 12,583.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.89 : 21,262.82 = 9,116.25 : x
  2. Step 2: Convert to fraction form
    15,403.89/21,262.82 = 9,116.25/x
  3. Step 3: Cross multiply
    15,403.89x = 21,262.82 × 9,116.25
  4. Step 4: Simplify right side
    15,403.89x = 193,837,137.24
  5. Step 5: Solve for x
    x = 193,837,137.24/15,403.89
  6. Step 6: Final answer
    x = 12,583.65

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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.