Home / 14,986.58-20,681.48-8,272.21

Finding the Fourth Proportional to 14,986.58, 20,681.48 and 8,272.21

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Solution

The fourth proportional to 14,986.58, 20,681.48 and 8,272.21 is: 11,415.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.58 : 20,681.48 = 8,272.21 : x
  2. Step 2: Convert to fraction form
    14,986.58/20,681.48 = 8,272.21/x
  3. Step 3: Cross multiply
    14,986.58x = 20,681.48 × 8,272.21
  4. Step 4: Simplify right side
    14,986.58x = 171,081,429.34
  5. Step 5: Solve for x
    x = 171,081,429.34/14,986.58
  6. Step 6: Final answer
    x = 11,415.65

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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.