Home / 18,220.50-25,159.47-12,271.86

Finding the Fourth Proportional to 18,220.50, 25,159.47 and 12,271.86

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Solution

The fourth proportional to 18,220.50, 25,159.47 and 12,271.86 is: 16,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.50 : 25,159.47 = 12,271.86 : x
  2. Step 2: Convert to fraction form
    18,220.50/25,159.47 = 12,271.86/x
  3. Step 3: Cross multiply
    18,220.50x = 25,159.47 × 12,271.86
  4. Step 4: Simplify right side
    18,220.50x = 308,753,493.51
  5. Step 5: Solve for x
    x = 308,753,493.51/18,220.50
  6. Step 6: Final answer
    x = 16,945.39

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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.