Home / 21,042,190.04-31,572,378-11,315,434.36

Finding the Fourth Proportional to 21,042,190.04, 31,572,378 and 11,315,434.36

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Solution

The fourth proportional to 21,042,190.04, 31,572,378 and 11,315,434.36 is: 16,978,041.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042,190.04 : 31,572,378 = 11,315,434.36 : x
  2. Step 2: Convert to fraction form
    21,042,190.04/31,572,378 = 11,315,434.36/x
  3. Step 3: Cross multiply
    21,042,190.04x = 31,572,378 × 11,315,434.36
  4. Step 4: Simplify right side
    21,042,190.04x = 357,255,170,848,108.06
  5. Step 5: Solve for x
    x = 357,255,170,848,108.06/21,042,190.04
  6. Step 6: Final answer
    x = 16,978,041.27

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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.