Home / 14,290.12-19,718.74-8,320.53

Finding the Fourth Proportional to 14,290.12, 19,718.74 and 8,320.53

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Solution

The fourth proportional to 14,290.12, 19,718.74 and 8,320.53 is: 11,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.12 : 19,718.74 = 8,320.53 : x
  2. Step 2: Convert to fraction form
    14,290.12/19,718.74 = 8,320.53/x
  3. Step 3: Cross multiply
    14,290.12x = 19,718.74 × 8,320.53
  4. Step 4: Simplify right side
    14,290.12x = 164,070,367.73
  5. Step 5: Solve for x
    x = 164,070,367.73/14,290.12
  6. Step 6: Final answer
    x = 11,481.38

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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.