Home / 38,956.30-53,746.80-21,958.45

Finding the Fourth Proportional to 38,956.30, 53,746.80 and 21,958.45

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Solution

The fourth proportional to 38,956.30, 53,746.80 and 21,958.45 is: 30,295.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,956.30 : 53,746.80 = 21,958.45 : x
  2. Step 2: Convert to fraction form
    38,956.30/53,746.80 = 21,958.45/x
  3. Step 3: Cross multiply
    38,956.30x = 53,746.80 × 21,958.45
  4. Step 4: Simplify right side
    38,956.30x = 1,180,196,420.46
  5. Step 5: Solve for x
    x = 1,180,196,420.46/38,956.30
  6. Step 6: Final answer
    x = 30,295.39

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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.