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Finding the Fourth Proportional to 12,919.16, 19,381.01 and 4,598.98

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Solution

The fourth proportional to 12,919.16, 19,381.01 and 4,598.98 is: 6,899.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.16 : 19,381.01 = 4,598.98 : x
  2. Step 2: Convert to fraction form
    12,919.16/19,381.01 = 4,598.98/x
  3. Step 3: Cross multiply
    12,919.16x = 19,381.01 × 4,598.98
  4. Step 4: Simplify right side
    12,919.16x = 89,132,805.92
  5. Step 5: Solve for x
    x = 89,132,805.92/12,919.16
  6. Step 6: Final answer
    x = 6,899.27

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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.