Home / 20,428.54-30,651.32-10,570.03

Finding the Fourth Proportional to 20,428.54, 30,651.32 and 10,570.03

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Solution

The fourth proportional to 20,428.54, 30,651.32 and 10,570.03 is: 15,859.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.54 : 30,651.32 = 10,570.03 : x
  2. Step 2: Convert to fraction form
    20,428.54/30,651.32 = 10,570.03/x
  3. Step 3: Cross multiply
    20,428.54x = 30,651.32 × 10,570.03
  4. Step 4: Simplify right side
    20,428.54x = 323,985,371.94
  5. Step 5: Solve for x
    x = 323,985,371.94/20,428.54
  6. Step 6: Final answer
    x = 15,859.45

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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.