Home / 21,075.92-31,631.62-10,542.78

Finding the Fourth Proportional to 21,075.92, 31,631.62 and 10,542.78

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Solution

The fourth proportional to 21,075.92, 31,631.62 and 10,542.78 is: 15,823.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.92 : 31,631.62 = 10,542.78 : x
  2. Step 2: Convert to fraction form
    21,075.92/31,631.62 = 10,542.78/x
  3. Step 3: Cross multiply
    21,075.92x = 31,631.62 × 10,542.78
  4. Step 4: Simplify right side
    21,075.92x = 333,485,157.99
  5. Step 5: Solve for x
    x = 333,485,157.99/21,075.92
  6. Step 6: Final answer
    x = 15,823.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.