Home / 39,033.85-53,866.80-21,129.01

Finding the Fourth Proportional to 39,033.85, 53,866.80 and 21,129.01

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Solution

The fourth proportional to 39,033.85, 53,866.80 and 21,129.01 is: 29,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.85 : 53,866.80 = 21,129.01 : x
  2. Step 2: Convert to fraction form
    39,033.85/53,866.80 = 21,129.01/x
  3. Step 3: Cross multiply
    39,033.85x = 53,866.80 × 21,129.01
  4. Step 4: Simplify right side
    39,033.85x = 1,138,152,155.87
  5. Step 5: Solve for x
    x = 1,138,152,155.87/39,033.85
  6. Step 6: Final answer
    x = 29,158.08

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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.