Home / 12,479.48-18,746.55-9,213.56

Finding the Fourth Proportional to 12,479.48, 18,746.55 and 9,213.56

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Solution

The fourth proportional to 12,479.48, 18,746.55 and 9,213.56 is: 13,840.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.48 : 18,746.55 = 9,213.56 : x
  2. Step 2: Convert to fraction form
    12,479.48/18,746.55 = 9,213.56/x
  3. Step 3: Cross multiply
    12,479.48x = 18,746.55 × 9,213.56
  4. Step 4: Simplify right side
    12,479.48x = 172,722,369.49
  5. Step 5: Solve for x
    x = 172,722,369.49/12,479.48
  6. Step 6: Final answer
    x = 13,840.52

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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.