Home / 31,533.20-43,541.20-21,482.72

Finding the Fourth Proportional to 31,533.20, 43,541.20 and 21,482.72

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Solution

The fourth proportional to 31,533.20, 43,541.20 and 21,482.72 is: 29,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,533.20 : 43,541.20 = 21,482.72 : x
  2. Step 2: Convert to fraction form
    31,533.20/43,541.20 = 21,482.72/x
  3. Step 3: Cross multiply
    31,533.20x = 43,541.20 × 21,482.72
  4. Step 4: Simplify right side
    31,533.20x = 935,383,408.06
  5. Step 5: Solve for x
    x = 935,383,408.06/31,533.20
  6. Step 6: Final answer
    x = 29,663.45

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Half scale
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Double scale
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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.