Home / 21,097.07-31,629.96-12,775.08

Finding the Fourth Proportional to 21,097.07, 31,629.96 and 12,775.08

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Solution

The fourth proportional to 21,097.07, 31,629.96 and 12,775.08 is: 19,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.07 : 31,629.96 = 12,775.08 : x
  2. Step 2: Convert to fraction form
    21,097.07/31,629.96 = 12,775.08/x
  3. Step 3: Cross multiply
    21,097.07x = 31,629.96 × 12,775.08
  4. Step 4: Simplify right side
    21,097.07x = 404,075,269.40
  5. Step 5: Solve for x
    x = 404,075,269.40/21,097.07
  6. Step 6: Final answer
    x = 19,153.15

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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.