Home / 15,418.18-21,274.81-9,042.36

Finding the Fourth Proportional to 15,418.18, 21,274.81 and 9,042.36

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Solution

The fourth proportional to 15,418.18, 21,274.81 and 9,042.36 is: 12,477.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.18 : 21,274.81 = 9,042.36 : x
  2. Step 2: Convert to fraction form
    15,418.18/21,274.81 = 9,042.36/x
  3. Step 3: Cross multiply
    15,418.18x = 21,274.81 × 9,042.36
  4. Step 4: Simplify right side
    15,418.18x = 192,374,490.95
  5. Step 5: Solve for x
    x = 192,374,490.95/15,418.18
  6. Step 6: Final answer
    x = 12,477.12

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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.