Home / 39,010.83-53,834.86-21,105.78

Finding the Fourth Proportional to 39,010.83, 53,834.86 and 21,105.78

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Solution

The fourth proportional to 39,010.83, 53,834.86 and 21,105.78 is: 29,125.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,010.83 : 53,834.86 = 21,105.78 : x
  2. Step 2: Convert to fraction form
    39,010.83/53,834.86 = 21,105.78/x
  3. Step 3: Cross multiply
    39,010.83x = 53,834.86 × 21,105.78
  4. Step 4: Simplify right side
    39,010.83x = 1,136,226,711.49
  5. Step 5: Solve for x
    x = 1,136,226,711.49/39,010.83
  6. Step 6: Final answer
    x = 29,125.93

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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.