Home / 21,903,032.21-30,229,977.20-13,201,214.76

Finding the Fourth Proportional to 21,903,032.21, 30,229,977.20 and 13,201,214.76

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Solution

The fourth proportional to 21,903,032.21, 30,229,977.20 and 13,201,214.76 is: 18,219,962.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903,032.21 : 30,229,977.20 = 13,201,214.76 : x
  2. Step 2: Convert to fraction form
    21,903,032.21/30,229,977.20 = 13,201,214.76/x
  3. Step 3: Cross multiply
    21,903,032.21x = 30,229,977.20 × 13,201,214.76
  4. Step 4: Simplify right side
    21,903,032.21x = 399,072,421,141,097.38
  5. Step 5: Solve for x
    x = 399,072,421,141,097.38/21,903,032.21
  6. Step 6: Final answer
    x = 18,219,962.31

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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.