Home / 39,484.51-54,488.49-21,579.64

Finding the Fourth Proportional to 39,484.51, 54,488.49 and 21,579.64

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Solution

The fourth proportional to 39,484.51, 54,488.49 and 21,579.64 is: 29,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,484.51 : 54,488.49 = 21,579.64 : x
  2. Step 2: Convert to fraction form
    39,484.51/54,488.49 = 21,579.64/x
  3. Step 3: Cross multiply
    39,484.51x = 54,488.49 × 21,579.64
  4. Step 4: Simplify right side
    39,484.51x = 1,175,841,998.34
  5. Step 5: Solve for x
    x = 1,175,841,998.34/39,484.51
  6. Step 6: Final answer
    x = 29,779.83

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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.