Home / 12,484.84-18,720.99-4,161.91

Finding the Fourth Proportional to 12,484.84, 18,720.99 and 4,161.91

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Solution

The fourth proportional to 12,484.84, 18,720.99 and 4,161.91 is: 6,240.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.84 : 18,720.99 = 4,161.91 : x
  2. Step 2: Convert to fraction form
    12,484.84/18,720.99 = 4,161.91/x
  3. Step 3: Cross multiply
    12,484.84x = 18,720.99 × 4,161.91
  4. Step 4: Simplify right side
    12,484.84x = 77,915,075.49
  5. Step 5: Solve for x
    x = 77,915,075.49/12,484.84
  6. Step 6: Final answer
    x = 6,240.77

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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.