Home / 11,987.17-17,968.65-4,957.49

Finding the Fourth Proportional to 11,987.17, 17,968.65 and 4,957.49

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Solution

The fourth proportional to 11,987.17, 17,968.65 and 4,957.49 is: 7,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.17 : 17,968.65 = 4,957.49 : x
  2. Step 2: Convert to fraction form
    11,987.17/17,968.65 = 4,957.49/x
  3. Step 3: Cross multiply
    11,987.17x = 17,968.65 × 4,957.49
  4. Step 4: Simplify right side
    11,987.17x = 89,079,288.06
  5. Step 5: Solve for x
    x = 89,079,288.06/11,987.17
  6. Step 6: Final answer
    x = 7,431.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.