Home / 15,796.18-21,798.31-8,722.45

Finding the Fourth Proportional to 15,796.18, 21,798.31 and 8,722.45

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Solution

The fourth proportional to 15,796.18, 21,798.31 and 8,722.45 is: 12,036.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.18 : 21,798.31 = 8,722.45 : x
  2. Step 2: Convert to fraction form
    15,796.18/21,798.31 = 8,722.45/x
  3. Step 3: Cross multiply
    15,796.18x = 21,798.31 × 8,722.45
  4. Step 4: Simplify right side
    15,796.18x = 190,134,669.06
  5. Step 5: Solve for x
    x = 190,134,669.06/15,796.18
  6. Step 6: Final answer
    x = 12,036.75

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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.