Home / 37,121.49-51,218.79-20,989.13

Finding the Fourth Proportional to 37,121.49, 51,218.79 and 20,989.13

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Solution

The fourth proportional to 37,121.49, 51,218.79 and 20,989.13 is: 28,959.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,121.49 : 51,218.79 = 20,989.13 : x
  2. Step 2: Convert to fraction form
    37,121.49/51,218.79 = 20,989.13/x
  3. Step 3: Cross multiply
    37,121.49x = 51,218.79 × 20,989.13
  4. Step 4: Simplify right side
    37,121.49x = 1,075,037,841.75
  5. Step 5: Solve for x
    x = 1,075,037,841.75/37,121.49
  6. Step 6: Final answer
    x = 28,959.99

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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.