Home / 21,325.05-31,993.25-7,285.05

Finding the Fourth Proportional to 21,325.05, 31,993.25 and 7,285.05

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Solution

The fourth proportional to 21,325.05, 31,993.25 and 7,285.05 is: 10,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.05 : 31,993.25 = 7,285.05 : x
  2. Step 2: Convert to fraction form
    21,325.05/31,993.25 = 7,285.05/x
  3. Step 3: Cross multiply
    21,325.05x = 31,993.25 × 7,285.05
  4. Step 4: Simplify right side
    21,325.05x = 233,072,509.46
  5. Step 5: Solve for x
    x = 233,072,509.46/21,325.05
  6. Step 6: Final answer
    x = 10,929.52

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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.