Home / 12,917.50-19,345.48-8,972.69

Finding the Fourth Proportional to 12,917.50, 19,345.48 and 8,972.69

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Solution

The fourth proportional to 12,917.50, 19,345.48 and 8,972.69 is: 13,437.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.50 : 19,345.48 = 8,972.69 : x
  2. Step 2: Convert to fraction form
    12,917.50/19,345.48 = 8,972.69/x
  3. Step 3: Cross multiply
    12,917.50x = 19,345.48 × 8,972.69
  4. Step 4: Simplify right side
    12,917.50x = 173,580,994.94
  5. Step 5: Solve for x
    x = 173,580,994.94/12,917.50
  6. Step 6: Final answer
    x = 13,437.66

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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.