Home / 20,553.05-30,902.90-18,929.18

Finding the Fourth Proportional to 20,553.05, 30,902.90 and 18,929.18

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Solution

The fourth proportional to 20,553.05, 30,902.90 and 18,929.18 is: 28,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.05 : 30,902.90 = 18,929.18 : x
  2. Step 2: Convert to fraction form
    20,553.05/30,902.90 = 18,929.18/x
  3. Step 3: Cross multiply
    20,553.05x = 30,902.90 × 18,929.18
  4. Step 4: Simplify right side
    20,553.05x = 584,966,307.46
  5. Step 5: Solve for x
    x = 584,966,307.46/20,553.05
  6. Step 6: Final answer
    x = 28,461.30

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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.