Home / 38,928.07-53,720.74-21,023.07

Finding the Fourth Proportional to 38,928.07, 53,720.74 and 21,023.07

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Solution

The fourth proportional to 38,928.07, 53,720.74 and 21,023.07 is: 29,011.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,928.07 : 53,720.74 = 21,023.07 : x
  2. Step 2: Convert to fraction form
    38,928.07/53,720.74 = 21,023.07/x
  3. Step 3: Cross multiply
    38,928.07x = 53,720.74 × 21,023.07
  4. Step 4: Simplify right side
    38,928.07x = 1,129,374,824.91
  5. Step 5: Solve for x
    x = 1,129,374,824.91/38,928.07
  6. Step 6: Final answer
    x = 29,011.84

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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.