Home / 13,990.44-20,985.66-4,756.44

Finding the Fourth Proportional to 13,990.44, 20,985.66 and 4,756.44

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Solution

The fourth proportional to 13,990.44, 20,985.66 and 4,756.44 is: 7,134.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.44 : 20,985.66 = 4,756.44 : x
  2. Step 2: Convert to fraction form
    13,990.44/20,985.66 = 4,756.44/x
  3. Step 3: Cross multiply
    13,990.44x = 20,985.66 × 4,756.44
  4. Step 4: Simplify right side
    13,990.44x = 99,817,008.87
  5. Step 5: Solve for x
    x = 99,817,008.87/13,990.44
  6. Step 6: Final answer
    x = 7,134.66

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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.