Home / 38,531.64-53,168.28-21,533.72

Finding the Fourth Proportional to 38,531.64, 53,168.28 and 21,533.72

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Solution

The fourth proportional to 38,531.64, 53,168.28 and 21,533.72 is: 29,713.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,531.64 : 53,168.28 = 21,533.72 : x
  2. Step 2: Convert to fraction form
    38,531.64/53,168.28 = 21,533.72/x
  3. Step 3: Cross multiply
    38,531.64x = 53,168.28 × 21,533.72
  4. Step 4: Simplify right side
    38,531.64x = 1,144,910,854.40
  5. Step 5: Solve for x
    x = 1,144,910,854.40/38,531.64
  6. Step 6: Final answer
    x = 29,713.53

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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.