Home / 39,010.80-53,835.30-21,106.20

Finding the Fourth Proportional to 39,010.80, 53,835.30 and 21,106.20

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Solution

The fourth proportional to 39,010.80, 53,835.30 and 21,106.20 is: 29,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,010.80 : 53,835.30 = 21,106.20 : x
  2. Step 2: Convert to fraction form
    39,010.80/53,835.30 = 21,106.20/x
  3. Step 3: Cross multiply
    39,010.80x = 53,835.30 × 21,106.20
  4. Step 4: Simplify right side
    39,010.80x = 1,136,258,608.86
  5. Step 5: Solve for x
    x = 1,136,258,608.86/39,010.80
  6. Step 6: Final answer
    x = 29,126.77

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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.