Home / 39,026.34-53,856.36-21,121.49

Finding the Fourth Proportional to 39,026.34, 53,856.36 and 21,121.49

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Solution

The fourth proportional to 39,026.34, 53,856.36 and 21,121.49 is: 29,147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,026.34 : 53,856.36 = 21,121.49 : x
  2. Step 2: Convert to fraction form
    39,026.34/53,856.36 = 21,121.49/x
  3. Step 3: Cross multiply
    39,026.34x = 53,856.36 × 21,121.49
  4. Step 4: Simplify right side
    39,026.34x = 1,137,526,299.89
  5. Step 5: Solve for x
    x = 1,137,526,299.89/39,026.34
  6. Step 6: Final answer
    x = 29,147.66

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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.