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Finding the Fourth Proportional to 18,890.79, 28,273.90 and 10,444.31

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Solution

The fourth proportional to 18,890.79, 28,273.90 and 10,444.31 is: 15,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.79 : 28,273.90 = 10,444.31 : x
  2. Step 2: Convert to fraction form
    18,890.79/28,273.90 = 10,444.31/x
  3. Step 3: Cross multiply
    18,890.79x = 28,273.90 × 10,444.31
  4. Step 4: Simplify right side
    18,890.79x = 295,301,376.51
  5. Step 5: Solve for x
    x = 295,301,376.51/18,890.79
  6. Step 6: Final answer
    x = 15,632.03

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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.