Home / 13,810.80-20,718.52-5,490.91

Finding the Fourth Proportional to 13,810.80, 20,718.52 and 5,490.91

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Solution

The fourth proportional to 13,810.80, 20,718.52 and 5,490.91 is: 8,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.80 : 20,718.52 = 5,490.91 : x
  2. Step 2: Convert to fraction form
    13,810.80/20,718.52 = 5,490.91/x
  3. Step 3: Cross multiply
    13,810.80x = 20,718.52 × 5,490.91
  4. Step 4: Simplify right side
    13,810.80x = 113,763,424.28
  5. Step 5: Solve for x
    x = 113,763,424.28/13,810.80
  6. Step 6: Final answer
    x = 8,237.28

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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.