Home / 28,120.24-42,172.14-13,325.19

Finding the Fourth Proportional to 28,120.24, 42,172.14 and 13,325.19

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Solution

The fourth proportional to 28,120.24, 42,172.14 and 13,325.19 is: 19,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.24 : 42,172.14 = 13,325.19 : x
  2. Step 2: Convert to fraction form
    28,120.24/42,172.14 = 13,325.19/x
  3. Step 3: Cross multiply
    28,120.24x = 42,172.14 × 13,325.19
  4. Step 4: Simplify right side
    28,120.24x = 561,951,670.03
  5. Step 5: Solve for x
    x = 561,951,670.03/28,120.24
  6. Step 6: Final answer
    x = 19,983.89

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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.