Home / 20,390.34-28,160.06-14,033.35

Finding the Fourth Proportional to 20,390.34, 28,160.06 and 14,033.35

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Solution

The fourth proportional to 20,390.34, 28,160.06 and 14,033.35 is: 19,380.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.34 : 28,160.06 = 14,033.35 : x
  2. Step 2: Convert to fraction form
    20,390.34/28,160.06 = 14,033.35/x
  3. Step 3: Cross multiply
    20,390.34x = 28,160.06 × 14,033.35
  4. Step 4: Simplify right side
    20,390.34x = 395,179,978.00
  5. Step 5: Solve for x
    x = 395,179,978.00/20,390.34
  6. Step 6: Final answer
    x = 19,380.74

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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.