Home / 12,445.09-17,196.08-9,947.81

Finding the Fourth Proportional to 12,445.09, 17,196.08 and 9,947.81

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Solution

The fourth proportional to 12,445.09, 17,196.08 and 9,947.81 is: 13,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.09 : 17,196.08 = 9,947.81 : x
  2. Step 2: Convert to fraction form
    12,445.09/17,196.08 = 9,947.81/x
  3. Step 3: Cross multiply
    12,445.09x = 17,196.08 × 9,947.81
  4. Step 4: Simplify right side
    12,445.09x = 171,063,336.58
  5. Step 5: Solve for x
    x = 171,063,336.58/12,445.09
  6. Step 6: Final answer
    x = 13,745.45

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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.