Home / 39,460.78-54,455.67-21,555.58

Finding the Fourth Proportional to 39,460.78, 54,455.67 and 21,555.58

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Solution

The fourth proportional to 39,460.78, 54,455.67 and 21,555.58 is: 29,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,460.78 : 54,455.67 = 21,555.58 : x
  2. Step 2: Convert to fraction form
    39,460.78/54,455.67 = 21,555.58/x
  3. Step 3: Cross multiply
    39,460.78x = 54,455.67 × 21,555.58
  4. Step 4: Simplify right side
    39,460.78x = 1,173,823,551.14
  5. Step 5: Solve for x
    x = 1,173,823,551.14/39,460.78
  6. Step 6: Final answer
    x = 29,746.59

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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.