Home / 19,647.35-29,478.16-12,142.17

Finding the Fourth Proportional to 19,647.35, 29,478.16 and 12,142.17

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Solution

The fourth proportional to 19,647.35, 29,478.16 and 12,142.17 is: 18,217.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.35 : 29,478.16 = 12,142.17 : x
  2. Step 2: Convert to fraction form
    19,647.35/29,478.16 = 12,142.17/x
  3. Step 3: Cross multiply
    19,647.35x = 29,478.16 × 12,142.17
  4. Step 4: Simplify right side
    19,647.35x = 357,928,830.01
  5. Step 5: Solve for x
    x = 357,928,830.01/19,647.35
  6. Step 6: Final answer
    x = 18,217.66

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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.