Home / 13,990.76-20,984.18-5,670.77

Finding the Fourth Proportional to 13,990.76, 20,984.18 and 5,670.77

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Solution

The fourth proportional to 13,990.76, 20,984.18 and 5,670.77 is: 8,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.76 : 20,984.18 = 5,670.77 : x
  2. Step 2: Convert to fraction form
    13,990.76/20,984.18 = 5,670.77/x
  3. Step 3: Cross multiply
    13,990.76x = 20,984.18 × 5,670.77
  4. Step 4: Simplify right side
    13,990.76x = 118,996,325.14
  5. Step 5: Solve for x
    x = 118,996,325.14/13,990.76
  6. Step 6: Final answer
    x = 8,505.35

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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.