Home / 20,377.36-28,116.48-13,314.16

Finding the Fourth Proportional to 20,377.36, 28,116.48 and 13,314.16

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Solution

The fourth proportional to 20,377.36, 28,116.48 and 13,314.16 is: 18,370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.36 : 28,116.48 = 13,314.16 : x
  2. Step 2: Convert to fraction form
    20,377.36/28,116.48 = 13,314.16/x
  3. Step 3: Cross multiply
    20,377.36x = 28,116.48 × 13,314.16
  4. Step 4: Simplify right side
    20,377.36x = 374,347,313.36
  5. Step 5: Solve for x
    x = 374,347,313.36/20,377.36
  6. Step 6: Final answer
    x = 18,370.75

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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.