Home / 18,744.63-28,095.07-10,420.66

Finding the Fourth Proportional to 18,744.63, 28,095.07 and 10,420.66

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Solution

The fourth proportional to 18,744.63, 28,095.07 and 10,420.66 is: 15,618.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.63 : 28,095.07 = 10,420.66 : x
  2. Step 2: Convert to fraction form
    18,744.63/28,095.07 = 10,420.66/x
  3. Step 3: Cross multiply
    18,744.63x = 28,095.07 × 10,420.66
  4. Step 4: Simplify right side
    18,744.63x = 292,769,172.15
  5. Step 5: Solve for x
    x = 292,769,172.15/18,744.63
  6. Step 6: Final answer
    x = 15,618.83

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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.