Home / 39,055.70-53,896.90-21,150.72

Finding the Fourth Proportional to 39,055.70, 53,896.90 and 21,150.72

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Solution

The fourth proportional to 39,055.70, 53,896.90 and 21,150.72 is: 29,188.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,055.70 : 53,896.90 = 21,150.72 : x
  2. Step 2: Convert to fraction form
    39,055.70/53,896.90 = 21,150.72/x
  3. Step 3: Cross multiply
    39,055.70x = 53,896.90 × 21,150.72
  4. Step 4: Simplify right side
    39,055.70x = 1,139,958,240.77
  5. Step 5: Solve for x
    x = 1,139,958,240.77/39,055.70
  6. Step 6: Final answer
    x = 29,188.01

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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.