Home / 20,469.87-28,264.86-13,303.35

Finding the Fourth Proportional to 20,469.87, 28,264.86 and 13,303.35

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Solution

The fourth proportional to 20,469.87, 28,264.86 and 13,303.35 is: 18,369.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.87 : 28,264.86 = 13,303.35 : x
  2. Step 2: Convert to fraction form
    20,469.87/28,264.86 = 13,303.35/x
  3. Step 3: Cross multiply
    20,469.87x = 28,264.86 × 13,303.35
  4. Step 4: Simplify right side
    20,469.87x = 376,017,325.28
  5. Step 5: Solve for x
    x = 376,017,325.28/20,469.87
  6. Step 6: Final answer
    x = 18,369.31

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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.