Home / 28,898.40-39,879.56-20,296.67

Finding the Fourth Proportional to 28,898.40, 39,879.56 and 20,296.67

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Solution

The fourth proportional to 28,898.40, 39,879.56 and 20,296.67 is: 28,009.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.40 : 39,879.56 = 20,296.67 : x
  2. Step 2: Convert to fraction form
    28,898.40/39,879.56 = 20,296.67/x
  3. Step 3: Cross multiply
    28,898.40x = 39,879.56 × 20,296.67
  4. Step 4: Simplify right side
    28,898.40x = 809,421,968.18
  5. Step 5: Solve for x
    x = 809,421,968.18/28,898.40
  6. Step 6: Final answer
    x = 28,009.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.