Home / 13,991.05-20,986.65-5,671.24

Finding the Fourth Proportional to 13,991.05, 20,986.65 and 5,671.24

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Solution

The fourth proportional to 13,991.05, 20,986.65 and 5,671.24 is: 8,506.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.05 : 20,986.65 = 5,671.24 : x
  2. Step 2: Convert to fraction form
    13,991.05/20,986.65 = 5,671.24/x
  3. Step 3: Cross multiply
    13,991.05x = 20,986.65 × 5,671.24
  4. Step 4: Simplify right side
    13,991.05x = 119,020,328.95
  5. Step 5: Solve for x
    x = 119,020,328.95/13,991.05
  6. Step 6: Final answer
    x = 8,506.89

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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.