Home / 12,798.72-17,661.60-7,208.64

Finding the Fourth Proportional to 12,798.72, 17,661.60 and 7,208.64

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Solution

The fourth proportional to 12,798.72, 17,661.60 and 7,208.64 is: 9,947.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.72 : 17,661.60 = 7,208.64 : x
  2. Step 2: Convert to fraction form
    12,798.72/17,661.60 = 7,208.64/x
  3. Step 3: Cross multiply
    12,798.72x = 17,661.60 × 7,208.64
  4. Step 4: Simplify right side
    12,798.72x = 127,316,116.22
  5. Step 5: Solve for x
    x = 127,316,116.22/12,798.72
  6. Step 6: Final answer
    x = 9,947.57

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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.