Home / 28,711.49-39,617.04-15,964.31

Finding the Fourth Proportional to 28,711.49, 39,617.04 and 15,964.31

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Solution

The fourth proportional to 28,711.49, 39,617.04 and 15,964.31 is: 22,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.49 : 39,617.04 = 15,964.31 : x
  2. Step 2: Convert to fraction form
    28,711.49/39,617.04 = 15,964.31/x
  3. Step 3: Cross multiply
    28,711.49x = 39,617.04 × 15,964.31
  4. Step 4: Simplify right side
    28,711.49x = 632,458,707.84
  5. Step 5: Solve for x
    x = 632,458,707.84/28,711.49
  6. Step 6: Final answer
    x = 22,028.07

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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.