Home / 14,215.77-19,617.80-7,928.55

Finding the Fourth Proportional to 14,215.77, 19,617.80 and 7,928.55

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Solution

The fourth proportional to 14,215.77, 19,617.80 and 7,928.55 is: 10,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.77 : 19,617.80 = 7,928.55 : x
  2. Step 2: Convert to fraction form
    14,215.77/19,617.80 = 7,928.55/x
  3. Step 3: Cross multiply
    14,215.77x = 19,617.80 × 7,928.55
  4. Step 4: Simplify right side
    14,215.77x = 155,540,668.55
  5. Step 5: Solve for x
    x = 155,540,668.55/14,215.77
  6. Step 6: Final answer
    x = 10,941.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.