Home / 15,929.10-21,984.87-9,218.84

Finding the Fourth Proportional to 15,929.10, 21,984.87 and 9,218.84

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Solution

The fourth proportional to 15,929.10, 21,984.87 and 9,218.84 is: 12,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.10 : 21,984.87 = 9,218.84 : x
  2. Step 2: Convert to fraction form
    15,929.10/21,984.87 = 9,218.84/x
  3. Step 3: Cross multiply
    15,929.10x = 21,984.87 × 9,218.84
  4. Step 4: Simplify right side
    15,929.10x = 202,674,889.03
  5. Step 5: Solve for x
    x = 202,674,889.03/15,929.10
  6. Step 6: Final answer
    x = 12,723.56

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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.