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Finding the Fourth Proportional to 20,513.00, 30,608.49 and 19,259.12

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Solution

The fourth proportional to 20,513.00, 30,608.49 and 19,259.12 is: 28,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.00 : 30,608.49 = 19,259.12 : x
  2. Step 2: Convert to fraction form
    20,513.00/30,608.49 = 19,259.12/x
  3. Step 3: Cross multiply
    20,513.00x = 30,608.49 × 19,259.12
  4. Step 4: Simplify right side
    20,513.00x = 589,492,428.89
  5. Step 5: Solve for x
    x = 589,492,428.89/20,513.00
  6. Step 6: Final answer
    x = 28,737.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.