Home / 38,720.64-53,435.52-21,956.16

Finding the Fourth Proportional to 38,720.64, 53,435.52 and 21,956.16

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Solution

The fourth proportional to 38,720.64, 53,435.52 and 21,956.16 is: 30,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,720.64 : 53,435.52 = 21,956.16 : x
  2. Step 2: Convert to fraction form
    38,720.64/53,435.52 = 21,956.16/x
  3. Step 3: Cross multiply
    38,720.64x = 53,435.52 × 21,956.16
  4. Step 4: Simplify right side
    38,720.64x = 1,173,238,826.80
  5. Step 5: Solve for x
    x = 1,173,238,826.80/38,720.64
  6. Step 6: Final answer
    x = 30,300.09

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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.