Home / 12,857.02-17,743.57-7,192.31

Finding the Fourth Proportional to 12,857.02, 17,743.57 and 7,192.31

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Solution

The fourth proportional to 12,857.02, 17,743.57 and 7,192.31 is: 9,925.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.02 : 17,743.57 = 7,192.31 : x
  2. Step 2: Convert to fraction form
    12,857.02/17,743.57 = 7,192.31/x
  3. Step 3: Cross multiply
    12,857.02x = 17,743.57 × 7,192.31
  4. Step 4: Simplify right side
    12,857.02x = 127,617,149.25
  5. Step 5: Solve for x
    x = 127,617,149.25/12,857.02
  6. Step 6: Final answer
    x = 9,925.88

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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.