Home / 12,320.75-18,484.05-4,000.79

Finding the Fourth Proportional to 12,320.75, 18,484.05 and 4,000.79

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Solution

The fourth proportional to 12,320.75, 18,484.05 and 4,000.79 is: 6,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.75 : 18,484.05 = 4,000.79 : x
  2. Step 2: Convert to fraction form
    12,320.75/18,484.05 = 4,000.79/x
  3. Step 3: Cross multiply
    12,320.75x = 18,484.05 × 4,000.79
  4. Step 4: Simplify right side
    12,320.75x = 73,950,802.40
  5. Step 5: Solve for x
    x = 73,950,802.40/12,320.75
  6. Step 6: Final answer
    x = 6,002.13

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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.