Home / 39,792.21-54,913.23-21,888.42

Finding the Fourth Proportional to 39,792.21, 54,913.23 and 21,888.42

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Solution

The fourth proportional to 39,792.21, 54,913.23 and 21,888.42 is: 30,206.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,792.21 : 54,913.23 = 21,888.42 : x
  2. Step 2: Convert to fraction form
    39,792.21/54,913.23 = 21,888.42/x
  3. Step 3: Cross multiply
    39,792.21x = 54,913.23 × 21,888.42
  4. Step 4: Simplify right side
    39,792.21x = 1,201,963,841.80
  5. Step 5: Solve for x
    x = 1,201,963,841.80/39,792.21
  6. Step 6: Final answer
    x = 30,206.01

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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.