Home / 20,050.52-30,058.86-12,638.64

Finding the Fourth Proportional to 20,050.52, 30,058.86 and 12,638.64

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Solution

The fourth proportional to 20,050.52, 30,058.86 and 12,638.64 is: 18,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,050.52 : 30,058.86 = 12,638.64 : x
  2. Step 2: Convert to fraction form
    20,050.52/30,058.86 = 12,638.64/x
  3. Step 3: Cross multiply
    20,050.52x = 30,058.86 × 12,638.64
  4. Step 4: Simplify right side
    20,050.52x = 379,903,109.19
  5. Step 5: Solve for x
    x = 379,903,109.19/20,050.52
  6. Step 6: Final answer
    x = 18,947.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.