Home / 13,309.80-19,964.64-4,075.80

Finding the Fourth Proportional to 13,309.80, 19,964.64 and 4,075.80

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Solution

The fourth proportional to 13,309.80, 19,964.64 and 4,075.80 is: 6,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.80 : 19,964.64 = 4,075.80 : x
  2. Step 2: Convert to fraction form
    13,309.80/19,964.64 = 4,075.80/x
  3. Step 3: Cross multiply
    13,309.80x = 19,964.64 × 4,075.80
  4. Step 4: Simplify right side
    13,309.80x = 81,371,879.71
  5. Step 5: Solve for x
    x = 81,371,879.71/13,309.80
  6. Step 6: Final answer
    x = 6,113.68

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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.