Home / 19,076.78-28,499.13-12,358.59

Finding the Fourth Proportional to 19,076.78, 28,499.13 and 12,358.59

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Solution

The fourth proportional to 19,076.78, 28,499.13 and 12,358.59 is: 18,462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,076.78 : 28,499.13 = 12,358.59 : x
  2. Step 2: Convert to fraction form
    19,076.78/28,499.13 = 12,358.59/x
  3. Step 3: Cross multiply
    19,076.78x = 28,499.13 × 12,358.59
  4. Step 4: Simplify right side
    19,076.78x = 352,208,956.15
  5. Step 5: Solve for x
    x = 352,208,956.15/19,076.78
  6. Step 6: Final answer
    x = 18,462.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.