Home / 39,114.40-53,977.92-21,209.32

Finding the Fourth Proportional to 39,114.40, 53,977.92 and 21,209.32

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Solution

The fourth proportional to 39,114.40, 53,977.92 and 21,209.32 is: 29,268.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,114.40 : 53,977.92 = 21,209.32 : x
  2. Step 2: Convert to fraction form
    39,114.40/53,977.92 = 21,209.32/x
  3. Step 3: Cross multiply
    39,114.40x = 53,977.92 × 21,209.32
  4. Step 4: Simplify right side
    39,114.40x = 1,144,834,978.21
  5. Step 5: Solve for x
    x = 1,144,834,978.21/39,114.40
  6. Step 6: Final answer
    x = 29,268.89

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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.