Home / 12,259.89-16,918.49-7,224.32

Finding the Fourth Proportional to 12,259.89, 16,918.49 and 7,224.32

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Solution

The fourth proportional to 12,259.89, 16,918.49 and 7,224.32 is: 9,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.89 : 16,918.49 = 7,224.32 : x
  2. Step 2: Convert to fraction form
    12,259.89/16,918.49 = 7,224.32/x
  3. Step 3: Cross multiply
    12,259.89x = 16,918.49 × 7,224.32
  4. Step 4: Simplify right side
    12,259.89x = 122,224,549.56
  5. Step 5: Solve for x
    x = 122,224,549.56/12,259.89
  6. Step 6: Final answer
    x = 9,969.47

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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.