Home / 12,819.34-17,690.64-7,153.93

Finding the Fourth Proportional to 12,819.34, 17,690.64 and 7,153.93

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Solution

The fourth proportional to 12,819.34, 17,690.64 and 7,153.93 is: 9,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.34 : 17,690.64 = 7,153.93 : x
  2. Step 2: Convert to fraction form
    12,819.34/17,690.64 = 7,153.93/x
  3. Step 3: Cross multiply
    12,819.34x = 17,690.64 × 7,153.93
  4. Step 4: Simplify right side
    12,819.34x = 126,557,600.22
  5. Step 5: Solve for x
    x = 126,557,600.22/12,819.34
  6. Step 6: Final answer
    x = 9,872.40

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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.