Home / 12,127.30-18,192.76-4,335.50

Finding the Fourth Proportional to 12,127.30, 18,192.76 and 4,335.50

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Solution

The fourth proportional to 12,127.30, 18,192.76 and 4,335.50 is: 6,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.30 : 18,192.76 = 4,335.50 : x
  2. Step 2: Convert to fraction form
    12,127.30/18,192.76 = 4,335.50/x
  3. Step 3: Cross multiply
    12,127.30x = 18,192.76 × 4,335.50
  4. Step 4: Simplify right side
    12,127.30x = 78,874,710.98
  5. Step 5: Solve for x
    x = 78,874,710.98/12,127.30
  6. Step 6: Final answer
    x = 6,503.90

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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.