Home / 20,847.77-28,769.63-11,416.32

Finding the Fourth Proportional to 20,847.77, 28,769.63 and 11,416.32

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Solution

The fourth proportional to 20,847.77, 28,769.63 and 11,416.32 is: 15,754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.77 : 28,769.63 = 11,416.32 : x
  2. Step 2: Convert to fraction form
    20,847.77/28,769.63 = 11,416.32/x
  3. Step 3: Cross multiply
    20,847.77x = 28,769.63 × 11,416.32
  4. Step 4: Simplify right side
    20,847.77x = 328,443,245.28
  5. Step 5: Solve for x
    x = 328,443,245.28/20,847.77
  6. Step 6: Final answer
    x = 15,754.36

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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.