Home / 39,484.05-54,486.34-21,579.67

Finding the Fourth Proportional to 39,484.05, 54,486.34 and 21,579.67

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Solution

The fourth proportional to 39,484.05, 54,486.34 and 21,579.67 is: 29,779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,484.05 : 54,486.34 = 21,579.67 : x
  2. Step 2: Convert to fraction form
    39,484.05/54,486.34 = 21,579.67/x
  3. Step 3: Cross multiply
    39,484.05x = 54,486.34 × 21,579.67
  4. Step 4: Simplify right side
    39,484.05x = 1,175,797,236.71
  5. Step 5: Solve for x
    x = 1,175,797,236.71/39,484.05
  6. Step 6: Final answer
    x = 29,779.04

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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.