Home / 15,933.12-21,984.08-9,218.58

Finding the Fourth Proportional to 15,933.12, 21,984.08 and 9,218.58

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Solution

The fourth proportional to 15,933.12, 21,984.08 and 9,218.58 is: 12,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.12 : 21,984.08 = 9,218.58 : x
  2. Step 2: Convert to fraction form
    15,933.12/21,984.08 = 9,218.58/x
  3. Step 3: Cross multiply
    15,933.12x = 21,984.08 × 9,218.58
  4. Step 4: Simplify right side
    15,933.12x = 202,662,000.21
  5. Step 5: Solve for x
    x = 202,662,000.21/15,933.12
  6. Step 6: Final answer
    x = 12,719.54

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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.