Home / 13,979.31-19,292.56-8,011.54

Finding the Fourth Proportional to 13,979.31, 19,292.56 and 8,011.54

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Solution

The fourth proportional to 13,979.31, 19,292.56 and 8,011.54 is: 11,056.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.31 : 19,292.56 = 8,011.54 : x
  2. Step 2: Convert to fraction form
    13,979.31/19,292.56 = 8,011.54/x
  3. Step 3: Cross multiply
    13,979.31x = 19,292.56 × 8,011.54
  4. Step 4: Simplify right side
    13,979.31x = 154,563,039.71
  5. Step 5: Solve for x
    x = 154,563,039.71/13,979.31
  6. Step 6: Final answer
    x = 11,056.56

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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.