Home / 39,484.40-54,487.55-21,579.89

Finding the Fourth Proportional to 39,484.40, 54,487.55 and 21,579.89

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Solution

The fourth proportional to 39,484.40, 54,487.55 and 21,579.89 is: 29,779.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,484.40 : 54,487.55 = 21,579.89 : x
  2. Step 2: Convert to fraction form
    39,484.40/54,487.55 = 21,579.89/x
  3. Step 3: Cross multiply
    39,484.40x = 54,487.55 × 21,579.89
  4. Step 4: Simplify right side
    39,484.40x = 1,175,835,116.88
  5. Step 5: Solve for x
    x = 1,175,835,116.88/39,484.40
  6. Step 6: Final answer
    x = 29,779.74

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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.