Home / 20,777.48-28,672.88-11,346.04

Finding the Fourth Proportional to 20,777.48, 28,672.88 and 11,346.04

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Solution

The fourth proportional to 20,777.48, 28,672.88 and 11,346.04 is: 15,657.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.48 : 28,672.88 = 11,346.04 : x
  2. Step 2: Convert to fraction form
    20,777.48/28,672.88 = 11,346.04/x
  3. Step 3: Cross multiply
    20,777.48x = 28,672.88 × 11,346.04
  4. Step 4: Simplify right side
    20,777.48x = 325,323,643.40
  5. Step 5: Solve for x
    x = 325,323,643.40/20,777.48
  6. Step 6: Final answer
    x = 15,657.51

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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.