Home / 20,671.46-28,525.60-11,240.02

Finding the Fourth Proportional to 20,671.46, 28,525.60 and 11,240.02

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Solution

The fourth proportional to 20,671.46, 28,525.60 and 11,240.02 is: 15,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.46 : 28,525.60 = 11,240.02 : x
  2. Step 2: Convert to fraction form
    20,671.46/28,525.60 = 11,240.02/x
  3. Step 3: Cross multiply
    20,671.46x = 28,525.60 × 11,240.02
  4. Step 4: Simplify right side
    20,671.46x = 320,628,314.51
  5. Step 5: Solve for x
    x = 320,628,314.51/20,671.46
  6. Step 6: Final answer
    x = 15,510.68

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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.