Home / 14,289.42-19,719.36-8,001.78

Finding the Fourth Proportional to 14,289.42, 19,719.36 and 8,001.78

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Solution

The fourth proportional to 14,289.42, 19,719.36 and 8,001.78 is: 11,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.42 : 19,719.36 = 8,001.78 : x
  2. Step 2: Convert to fraction form
    14,289.42/19,719.36 = 8,001.78/x
  3. Step 3: Cross multiply
    14,289.42x = 19,719.36 × 8,001.78
  4. Step 4: Simplify right side
    14,289.42x = 157,789,980.46
  5. Step 5: Solve for x
    x = 157,789,980.46/14,289.42
  6. Step 6: Final answer
    x = 11,042.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.