Home / 13,990.55-20,985.89-5,670.73

Finding the Fourth Proportional to 13,990.55, 20,985.89 and 5,670.73

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Solution

The fourth proportional to 13,990.55, 20,985.89 and 5,670.73 is: 8,506.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.55 : 20,985.89 = 5,670.73 : x
  2. Step 2: Convert to fraction form
    13,990.55/20,985.89 = 5,670.73/x
  3. Step 3: Cross multiply
    13,990.55x = 20,985.89 × 5,670.73
  4. Step 4: Simplify right side
    13,990.55x = 119,005,316.00
  5. Step 5: Solve for x
    x = 119,005,316.00/13,990.55
  6. Step 6: Final answer
    x = 8,506.12

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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.