Home / 9,990.19-14,990.51-3,754.50

Finding the Fourth Proportional to 9,990.19, 14,990.51 and 3,754.50

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Solution

The fourth proportional to 9,990.19, 14,990.51 and 3,754.50 is: 5,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.19 : 14,990.51 = 3,754.50 : x
  2. Step 2: Convert to fraction form
    9,990.19/14,990.51 = 3,754.50/x
  3. Step 3: Cross multiply
    9,990.19x = 14,990.51 × 3,754.50
  4. Step 4: Simplify right side
    9,990.19x = 56,281,869.80
  5. Step 5: Solve for x
    x = 56,281,869.80/9,990.19
  6. Step 6: Final answer
    x = 5,633.71

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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.