Home / 15,820.19-21,832.31-8,747.07

Finding the Fourth Proportional to 15,820.19, 21,832.31 and 8,747.07

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Solution

The fourth proportional to 15,820.19, 21,832.31 and 8,747.07 is: 12,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.19 : 21,832.31 = 8,747.07 : x
  2. Step 2: Convert to fraction form
    15,820.19/21,832.31 = 8,747.07/x
  3. Step 3: Cross multiply
    15,820.19x = 21,832.31 × 8,747.07
  4. Step 4: Simplify right side
    15,820.19x = 190,968,743.83
  5. Step 5: Solve for x
    x = 190,968,743.83/15,820.19
  6. Step 6: Final answer
    x = 12,071.20

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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.