Home / 20,295.90-30,509.46-18,225.54

Finding the Fourth Proportional to 20,295.90, 30,509.46 and 18,225.54

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Solution

The fourth proportional to 20,295.90, 30,509.46 and 18,225.54 is: 27,397.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.90 : 30,509.46 = 18,225.54 : x
  2. Step 2: Convert to fraction form
    20,295.90/30,509.46 = 18,225.54/x
  3. Step 3: Cross multiply
    20,295.90x = 30,509.46 × 18,225.54
  4. Step 4: Simplify right side
    20,295.90x = 556,051,383.61
  5. Step 5: Solve for x
    x = 556,051,383.61/20,295.90
  6. Step 6: Final answer
    x = 27,397.23

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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.