Home / 21,990,378.24-30,346,692.48-12,332,501.76

Finding the Fourth Proportional to 21,990,378.24, 30,346,692.48 and 12,332,501.76

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Solution

The fourth proportional to 21,990,378.24, 30,346,692.48 and 12,332,501.76 is: 17,018,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990,378.24 : 30,346,692.48 = 12,332,501.76 : x
  2. Step 2: Convert to fraction form
    21,990,378.24/30,346,692.48 = 12,332,501.76/x
  3. Step 3: Cross multiply
    21,990,378.24x = 30,346,692.48 × 12,332,501.76
  4. Step 4: Simplify right side
    21,990,378.24x = 374,250,638,419,778.75
  5. Step 5: Solve for x
    x = 374,250,638,419,778.75/21,990,378.24
  6. Step 6: Final answer
    x = 17,018,835.89

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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.