Home / 21,130,381.06-31,624,947.69-12,030,035.72

Finding the Fourth Proportional to 21,130,381.06, 31,624,947.69 and 12,030,035.72

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Solution

The fourth proportional to 21,130,381.06, 31,624,947.69 and 12,030,035.72 is: 18,004,845.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,381.06 : 31,624,947.69 = 12,030,035.72 : x
  2. Step 2: Convert to fraction form
    21,130,381.06/31,624,947.69 = 12,030,035.72/x
  3. Step 3: Cross multiply
    21,130,381.06x = 31,624,947.69 × 12,030,035.72
  4. Step 4: Simplify right side
    21,130,381.06x = 380,449,250,150,594.12
  5. Step 5: Solve for x
    x = 380,449,250,150,594.12/21,130,381.06
  6. Step 6: Final answer
    x = 18,004,845.68

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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.