Home / 20,763.81-28,653.89-11,332.35

Finding the Fourth Proportional to 20,763.81, 28,653.89 and 11,332.35

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Solution

The fourth proportional to 20,763.81, 28,653.89 and 11,332.35 is: 15,638.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.81 : 28,653.89 = 11,332.35 : x
  2. Step 2: Convert to fraction form
    20,763.81/28,653.89 = 11,332.35/x
  3. Step 3: Cross multiply
    20,763.81x = 28,653.89 × 11,332.35
  4. Step 4: Simplify right side
    20,763.81x = 324,715,853.68
  5. Step 5: Solve for x
    x = 324,715,853.68/20,763.81
  6. Step 6: Final answer
    x = 15,638.55

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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.