Home / 28,775.65-43,154.97-12,971.56

Finding the Fourth Proportional to 28,775.65, 43,154.97 and 12,971.56

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Solution

The fourth proportional to 28,775.65, 43,154.97 and 12,971.56 is: 19,453.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775.65 : 43,154.97 = 12,971.56 : x
  2. Step 2: Convert to fraction form
    28,775.65/43,154.97 = 12,971.56/x
  3. Step 3: Cross multiply
    28,775.65x = 43,154.97 × 12,971.56
  4. Step 4: Simplify right side
    28,775.65x = 559,787,282.65
  5. Step 5: Solve for x
    x = 559,787,282.65/28,775.65
  6. Step 6: Final answer
    x = 19,453.51

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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.