Home / 15,795.18-21,796.93-8,721.45

Finding the Fourth Proportional to 15,795.18, 21,796.93 and 8,721.45

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Solution

The fourth proportional to 15,795.18, 21,796.93 and 8,721.45 is: 12,035.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.18 : 21,796.93 = 8,721.45 : x
  2. Step 2: Convert to fraction form
    15,795.18/21,796.93 = 8,721.45/x
  3. Step 3: Cross multiply
    15,795.18x = 21,796.93 × 8,721.45
  4. Step 4: Simplify right side
    15,795.18x = 190,100,835.15
  5. Step 5: Solve for x
    x = 190,100,835.15/15,795.18
  6. Step 6: Final answer
    x = 12,035.37

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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.