Home / 30,616.54-42,225.75-21,571.87

Finding the Fourth Proportional to 30,616.54, 42,225.75 and 21,571.87

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Solution

The fourth proportional to 30,616.54, 42,225.75 and 21,571.87 is: 29,751.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,616.54 : 42,225.75 = 21,571.87 : x
  2. Step 2: Convert to fraction form
    30,616.54/42,225.75 = 21,571.87/x
  3. Step 3: Cross multiply
    30,616.54x = 42,225.75 × 21,571.87
  4. Step 4: Simplify right side
    30,616.54x = 910,888,389.65
  5. Step 5: Solve for x
    x = 910,888,389.65/30,616.54
  6. Step 6: Final answer
    x = 29,751.51

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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.