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Finding the Fourth Proportional to 28,002.03, 42,009.18 and 20,583.99

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Solution

The fourth proportional to 28,002.03, 42,009.18 and 20,583.99 is: 30,880.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.03 : 42,009.18 = 20,583.99 : x
  2. Step 2: Convert to fraction form
    28,002.03/42,009.18 = 20,583.99/x
  3. Step 3: Cross multiply
    28,002.03x = 42,009.18 × 20,583.99
  4. Step 4: Simplify right side
    28,002.03x = 864,716,541.03
  5. Step 5: Solve for x
    x = 864,716,541.03/28,002.03
  6. Step 6: Final answer
    x = 30,880.49

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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.