Home / 21,144,666.60-31,716,999.90-12,641,610.60

Finding the Fourth Proportional to 21,144,666.60, 31,716,999.90 and 12,641,610.60

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Solution

The fourth proportional to 21,144,666.60, 31,716,999.90 and 12,641,610.60 is: 18,962,415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144,666.60 : 31,716,999.90 = 12,641,610.60 : x
  2. Step 2: Convert to fraction form
    21,144,666.60/31,716,999.90 = 12,641,610.60/x
  3. Step 3: Cross multiply
    21,144,666.60x = 31,716,999.90 × 12,641,610.60
  4. Step 4: Simplify right side
    21,144,666.60x = 400,953,962,136,038.94
  5. Step 5: Solve for x
    x = 400,953,962,136,038.94/21,144,666.60
  6. Step 6: Final answer
    x = 18,962,415.90

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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.