Home / 18,901.08-28,335.18-7,800.84

Finding the Fourth Proportional to 18,901.08, 28,335.18 and 7,800.84

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Solution

The fourth proportional to 18,901.08, 28,335.18 and 7,800.84 is: 11,694.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.08 : 28,335.18 = 7,800.84 : x
  2. Step 2: Convert to fraction form
    18,901.08/28,335.18 = 7,800.84/x
  3. Step 3: Cross multiply
    18,901.08x = 28,335.18 × 7,800.84
  4. Step 4: Simplify right side
    18,901.08x = 221,038,205.55
  5. Step 5: Solve for x
    x = 221,038,205.55/18,901.08
  6. Step 6: Final answer
    x = 11,694.47

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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.