Home / 39,058.12-53,900.22-21,153.28

Finding the Fourth Proportional to 39,058.12, 53,900.22 and 21,153.28

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Solution

The fourth proportional to 39,058.12, 53,900.22 and 21,153.28 is: 29,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,058.12 : 53,900.22 = 21,153.28 : x
  2. Step 2: Convert to fraction form
    39,058.12/53,900.22 = 21,153.28/x
  3. Step 3: Cross multiply
    39,058.12x = 53,900.22 × 21,153.28
  4. Step 4: Simplify right side
    39,058.12x = 1,140,166,445.72
  5. Step 5: Solve for x
    x = 1,140,166,445.72/39,058.12
  6. Step 6: Final answer
    x = 29,191.53

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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.