Home / 39,030.35-53,861.97-21,125.51

Finding the Fourth Proportional to 39,030.35, 53,861.97 and 21,125.51

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Solution

The fourth proportional to 39,030.35, 53,861.97 and 21,125.51 is: 29,153.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,030.35 : 53,861.97 = 21,125.51 : x
  2. Step 2: Convert to fraction form
    39,030.35/53,861.97 = 21,125.51/x
  3. Step 3: Cross multiply
    39,030.35x = 53,861.97 × 21,125.51
  4. Step 4: Simplify right side
    39,030.35x = 1,137,861,585.85
  5. Step 5: Solve for x
    x = 1,137,861,585.85/39,030.35
  6. Step 6: Final answer
    x = 29,153.25

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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.