Home / 14,290.85-19,721.45-7,917.64

Finding the Fourth Proportional to 14,290.85, 19,721.45 and 7,917.64

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Solution

The fourth proportional to 14,290.85, 19,721.45 and 7,917.64 is: 10,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.85 : 19,721.45 = 7,917.64 : x
  2. Step 2: Convert to fraction form
    14,290.85/19,721.45 = 7,917.64/x
  3. Step 3: Cross multiply
    14,290.85x = 19,721.45 × 7,917.64
  4. Step 4: Simplify right side
    14,290.85x = 156,147,341.38
  5. Step 5: Solve for x
    x = 156,147,341.38/14,290.85
  6. Step 6: Final answer
    x = 10,926.39

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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.