Home / 20,659.64-28,510.48-11,228.28

Finding the Fourth Proportional to 20,659.64, 28,510.48 and 11,228.28

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Solution

The fourth proportional to 20,659.64, 28,510.48 and 11,228.28 is: 15,495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.64 : 28,510.48 = 11,228.28 : x
  2. Step 2: Convert to fraction form
    20,659.64/28,510.48 = 11,228.28/x
  3. Step 3: Cross multiply
    20,659.64x = 28,510.48 × 11,228.28
  4. Step 4: Simplify right side
    20,659.64x = 320,123,652.37
  5. Step 5: Solve for x
    x = 320,123,652.37/20,659.64
  6. Step 6: Final answer
    x = 15,495.12

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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.