Home / 15,930.19-21,984.11-8,857.07

Finding the Fourth Proportional to 15,930.19, 21,984.11 and 8,857.07

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Solution

The fourth proportional to 15,930.19, 21,984.11 and 8,857.07 is: 12,223.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.19 : 21,984.11 = 8,857.07 : x
  2. Step 2: Convert to fraction form
    15,930.19/21,984.11 = 8,857.07/x
  3. Step 3: Cross multiply
    15,930.19x = 21,984.11 × 8,857.07
  4. Step 4: Simplify right side
    15,930.19x = 194,714,801.16
  5. Step 5: Solve for x
    x = 194,714,801.16/15,930.19
  6. Step 6: Final answer
    x = 12,223.01

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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.