Home / 20,421,267.48-28,181,353.86-11,128,840.14

Finding the Fourth Proportional to 20,421,267.48, 28,181,353.86 and 11,128,840.14

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Solution

The fourth proportional to 20,421,267.48, 28,181,353.86 and 11,128,840.14 is: 15,357,801.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,267.48 : 28,181,353.86 = 11,128,840.14 : x
  2. Step 2: Convert to fraction form
    20,421,267.48/28,181,353.86 = 11,128,840.14/x
  3. Step 3: Cross multiply
    20,421,267.48x = 28,181,353.86 × 11,128,840.14
  4. Step 4: Simplify right side
    20,421,267.48x = 313,625,782,036,711.94
  5. Step 5: Solve for x
    x = 313,625,782,036,711.94/20,421,267.48
  6. Step 6: Final answer
    x = 15,357,801.98

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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.