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Finding the Fourth Proportional to 20,554.59, 30,802.73 and 15,020.67

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Solution

The fourth proportional to 20,554.59, 30,802.73 and 15,020.67 is: 22,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.59 : 30,802.73 = 15,020.67 : x
  2. Step 2: Convert to fraction form
    20,554.59/30,802.73 = 15,020.67/x
  3. Step 3: Cross multiply
    20,554.59x = 30,802.73 × 15,020.67
  4. Step 4: Simplify right side
    20,554.59x = 462,677,567.33
  5. Step 5: Solve for x
    x = 462,677,567.33/20,554.59
  6. Step 6: Final answer
    x = 22,509.70

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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.