Home / 20,331,931.69-28,058,408.40-11,165,427.37

Finding the Fourth Proportional to 20,331,931.69, 28,058,408.40 and 11,165,427.37

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Solution

The fourth proportional to 20,331,931.69, 28,058,408.40 and 11,165,427.37 is: 15,408,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331,931.69 : 28,058,408.40 = 11,165,427.37 : x
  2. Step 2: Convert to fraction form
    20,331,931.69/28,058,408.40 = 11,165,427.37/x
  3. Step 3: Cross multiply
    20,331,931.69x = 28,058,408.40 × 11,165,427.37
  4. Step 4: Simplify right side
    20,331,931.69x = 313,284,121,107,997.88
  5. Step 5: Solve for x
    x = 313,284,121,107,997.88/20,331,931.69
  6. Step 6: Final answer
    x = 15,408,477.95

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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.