Home / 13,990.05-20,985.15-5,670.24

Finding the Fourth Proportional to 13,990.05, 20,985.15 and 5,670.24

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Solution

The fourth proportional to 13,990.05, 20,985.15 and 5,670.24 is: 8,505.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.05 : 20,985.15 = 5,670.24 : x
  2. Step 2: Convert to fraction form
    13,990.05/20,985.15 = 5,670.24/x
  3. Step 3: Cross multiply
    13,990.05x = 20,985.15 × 5,670.24
  4. Step 4: Simplify right side
    13,990.05x = 118,990,836.94
  5. Step 5: Solve for x
    x = 118,990,836.94/13,990.05
  6. Step 6: Final answer
    x = 8,505.39

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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.