Home / 13,311.41-19,970.49-4,991.45

Finding the Fourth Proportional to 13,311.41, 19,970.49 and 4,991.45

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Solution

The fourth proportional to 13,311.41, 19,970.49 and 4,991.45 is: 7,488.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.41 : 19,970.49 = 4,991.45 : x
  2. Step 2: Convert to fraction form
    13,311.41/19,970.49 = 4,991.45/x
  3. Step 3: Cross multiply
    13,311.41x = 19,970.49 × 4,991.45
  4. Step 4: Simplify right side
    13,311.41x = 99,681,702.31
  5. Step 5: Solve for x
    x = 99,681,702.31/13,311.41
  6. Step 6: Final answer
    x = 7,488.44

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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.