Home / 15,347.04-21,192.76-9,691.80

Finding the Fourth Proportional to 15,347.04, 21,192.76 and 9,691.80

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Solution

The fourth proportional to 15,347.04, 21,192.76 and 9,691.80 is: 13,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.04 : 21,192.76 = 9,691.80 : x
  2. Step 2: Convert to fraction form
    15,347.04/21,192.76 = 9,691.80/x
  3. Step 3: Cross multiply
    15,347.04x = 21,192.76 × 9,691.80
  4. Step 4: Simplify right side
    15,347.04x = 205,395,991.37
  5. Step 5: Solve for x
    x = 205,395,991.37/15,347.04
  6. Step 6: Final answer
    x = 13,383.43

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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.