Home / 38,778.36-53,543.88-28,193.28

Finding the Fourth Proportional to 38,778.36, 53,543.88 and 28,193.28

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Solution

The fourth proportional to 38,778.36, 53,543.88 and 28,193.28 is: 38,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,778.36 : 53,543.88 = 28,193.28 : x
  2. Step 2: Convert to fraction form
    38,778.36/53,543.88 = 28,193.28/x
  3. Step 3: Cross multiply
    38,778.36x = 53,543.88 × 28,193.28
  4. Step 4: Simplify right side
    38,778.36x = 1,509,577,601.13
  5. Step 5: Solve for x
    x = 1,509,577,601.13/38,778.36
  6. Step 6: Final answer
    x = 38,928.35

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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.