Home / 13,726.80-20,590.20-9,291.60

Finding the Fourth Proportional to 13,726.80, 20,590.20 and 9,291.60

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Solution

The fourth proportional to 13,726.80, 20,590.20 and 9,291.60 is: 13,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.80 : 20,590.20 = 9,291.60 : x
  2. Step 2: Convert to fraction form
    13,726.80/20,590.20 = 9,291.60/x
  3. Step 3: Cross multiply
    13,726.80x = 20,590.20 × 9,291.60
  4. Step 4: Simplify right side
    13,726.80x = 191,315,902.32
  5. Step 5: Solve for x
    x = 191,315,902.32/13,726.80
  6. Step 6: Final answer
    x = 13,937.40

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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.