Home / 20,800.61-31,206.38-7,474.95

Finding the Fourth Proportional to 20,800.61, 31,206.38 and 7,474.95

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Solution

The fourth proportional to 20,800.61, 31,206.38 and 7,474.95 is: 11,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.61 : 31,206.38 = 7,474.95 : x
  2. Step 2: Convert to fraction form
    20,800.61/31,206.38 = 7,474.95/x
  3. Step 3: Cross multiply
    20,800.61x = 31,206.38 × 7,474.95
  4. Step 4: Simplify right side
    20,800.61x = 233,266,130.18
  5. Step 5: Solve for x
    x = 233,266,130.18/20,800.61
  6. Step 6: Final answer
    x = 11,214.39

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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.