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Finding the Fourth Proportional to 12,361.45, 17,058.71 and 6,985.63

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Solution

The fourth proportional to 12,361.45, 17,058.71 and 6,985.63 is: 9,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.45 : 17,058.71 = 6,985.63 : x
  2. Step 2: Convert to fraction form
    12,361.45/17,058.71 = 6,985.63/x
  3. Step 3: Cross multiply
    12,361.45x = 17,058.71 × 6,985.63
  4. Step 4: Simplify right side
    12,361.45x = 119,165,751.04
  5. Step 5: Solve for x
    x = 119,165,751.04/12,361.45
  6. Step 6: Final answer
    x = 9,640.11

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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.