Home / 20,763.63-28,654-11,332.19

Finding the Fourth Proportional to 20,763.63, 28,654 and 11,332.19

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Solution

The fourth proportional to 20,763.63, 28,654 and 11,332.19 is: 15,638.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.63 : 28,654 = 11,332.19 : x
  2. Step 2: Convert to fraction form
    20,763.63/28,654 = 11,332.19/x
  3. Step 3: Cross multiply
    20,763.63x = 28,654 × 11,332.19
  4. Step 4: Simplify right side
    20,763.63x = 324,712,572.26
  5. Step 5: Solve for x
    x = 324,712,572.26/20,763.63
  6. Step 6: Final answer
    x = 15,638.53

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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.