Home / 39,019.76-53,847.12-21,114.80

Finding the Fourth Proportional to 39,019.76, 53,847.12 and 21,114.80

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Solution

The fourth proportional to 39,019.76, 53,847.12 and 21,114.80 is: 29,138.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,019.76 : 53,847.12 = 21,114.80 : x
  2. Step 2: Convert to fraction form
    39,019.76/53,847.12 = 21,114.80/x
  3. Step 3: Cross multiply
    39,019.76x = 53,847.12 × 21,114.80
  4. Step 4: Simplify right side
    39,019.76x = 1,136,971,169.38
  5. Step 5: Solve for x
    x = 1,136,971,169.38/39,019.76
  6. Step 6: Final answer
    x = 29,138.34

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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.