Home / 21,130,368.31-31,624,928.46-12,030,022.88

Finding the Fourth Proportional to 21,130,368.31, 31,624,928.46 and 12,030,022.88

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Solution

The fourth proportional to 21,130,368.31, 31,624,928.46 and 12,030,022.88 is: 18,004,826.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,368.31 : 31,624,928.46 = 12,030,022.88 : x
  2. Step 2: Convert to fraction form
    21,130,368.31/31,624,928.46 = 12,030,022.88/x
  3. Step 3: Cross multiply
    21,130,368.31x = 31,624,928.46 × 12,030,022.88
  4. Step 4: Simplify right side
    21,130,368.31x = 380,448,612,794,038.56
  5. Step 5: Solve for x
    x = 380,448,612,794,038.56/21,130,368.31
  6. Step 6: Final answer
    x = 18,004,826.38

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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.