Home / 20,303.27-28,019.13-11,351.15

Finding the Fourth Proportional to 20,303.27, 28,019.13 and 11,351.15

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Solution

The fourth proportional to 20,303.27, 28,019.13 and 11,351.15 is: 15,664.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.27 : 28,019.13 = 11,351.15 : x
  2. Step 2: Convert to fraction form
    20,303.27/28,019.13 = 11,351.15/x
  3. Step 3: Cross multiply
    20,303.27x = 28,019.13 × 11,351.15
  4. Step 4: Simplify right side
    20,303.27x = 318,049,347.50
  5. Step 5: Solve for x
    x = 318,049,347.50/20,303.27
  6. Step 6: Final answer
    x = 15,664.93

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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.