Home / 20,421,025.05-28,181,020.43-11,128,597.67

Finding the Fourth Proportional to 20,421,025.05, 28,181,020.43 and 11,128,597.67

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Solution

The fourth proportional to 20,421,025.05, 28,181,020.43 and 11,128,597.67 is: 15,357,467.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,025.05 : 28,181,020.43 = 11,128,597.67 : x
  2. Step 2: Convert to fraction form
    20,421,025.05/28,181,020.43 = 11,128,597.67/x
  3. Step 3: Cross multiply
    20,421,025.05x = 28,181,020.43 × 11,128,597.67
  4. Step 4: Simplify right side
    20,421,025.05x = 313,615,238,314,549.44
  5. Step 5: Solve for x
    x = 313,615,238,314,549.44/20,421,025.05
  6. Step 6: Final answer
    x = 15,357,467.98

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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.