Home / 12,984.81-19,478.13-4,664.89

Finding the Fourth Proportional to 12,984.81, 19,478.13 and 4,664.89

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Solution

The fourth proportional to 12,984.81, 19,478.13 and 4,664.89 is: 6,997.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.81 : 19,478.13 = 4,664.89 : x
  2. Step 2: Convert to fraction form
    12,984.81/19,478.13 = 4,664.89/x
  3. Step 3: Cross multiply
    12,984.81x = 19,478.13 × 4,664.89
  4. Step 4: Simplify right side
    12,984.81x = 90,863,333.86
  5. Step 5: Solve for x
    x = 90,863,333.86/12,984.81
  6. Step 6: Final answer
    x = 6,997.66

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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.