Home / 15,934.19-21,986.64-9,218.48

Finding the Fourth Proportional to 15,934.19, 21,986.64 and 9,218.48

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Solution

The fourth proportional to 15,934.19, 21,986.64 and 9,218.48 is: 12,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.19 : 21,986.64 = 9,218.48 : x
  2. Step 2: Convert to fraction form
    15,934.19/21,986.64 = 9,218.48/x
  3. Step 3: Cross multiply
    15,934.19x = 21,986.64 × 9,218.48
  4. Step 4: Simplify right side
    15,934.19x = 202,683,291.17
  5. Step 5: Solve for x
    x = 202,683,291.17/15,934.19
  6. Step 6: Final answer
    x = 12,720.03

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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.