Home / 14,290.40-21,439-5,965.80

Finding the Fourth Proportional to 14,290.40, 21,439 and 5,965.80

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Solution

The fourth proportional to 14,290.40, 21,439 and 5,965.80 is: 8,950.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.40 : 21,439 = 5,965.80 : x
  2. Step 2: Convert to fraction form
    14,290.40/21,439 = 5,965.80/x
  3. Step 3: Cross multiply
    14,290.40x = 21,439 × 5,965.80
  4. Step 4: Simplify right side
    14,290.40x = 127,900,786.20
  5. Step 5: Solve for x
    x = 127,900,786.20/14,290.40
  6. Step 6: Final answer
    x = 8,950.12

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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.