Home / 39,860.99-55,007.51-21,957.67

Finding the Fourth Proportional to 39,860.99, 55,007.51 and 21,957.67

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Solution

The fourth proportional to 39,860.99, 55,007.51 and 21,957.67 is: 30,301.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.99 : 55,007.51 = 21,957.67 : x
  2. Step 2: Convert to fraction form
    39,860.99/55,007.51 = 21,957.67/x
  3. Step 3: Cross multiply
    39,860.99x = 55,007.51 × 21,957.67
  4. Step 4: Simplify right side
    39,860.99x = 1,207,836,669.48
  5. Step 5: Solve for x
    x = 1,207,836,669.48/39,860.99
  6. Step 6: Final answer
    x = 30,301.22

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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.