Home / 20,659.95-28,510.60-11,228.52

Finding the Fourth Proportional to 20,659.95, 28,510.60 and 11,228.52

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Solution

The fourth proportional to 20,659.95, 28,510.60 and 11,228.52 is: 15,495.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.95 : 28,510.60 = 11,228.52 : x
  2. Step 2: Convert to fraction form
    20,659.95/28,510.60 = 11,228.52/x
  3. Step 3: Cross multiply
    20,659.95x = 28,510.60 × 11,228.52
  4. Step 4: Simplify right side
    20,659.95x = 320,131,671.69
  5. Step 5: Solve for x
    x = 320,131,671.69/20,659.95
  6. Step 6: Final answer
    x = 15,495.28

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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.