Home / 21,101,708.40-31,652,562.60-19,149,154.80

Finding the Fourth Proportional to 21,101,708.40, 31,652,562.60 and 19,149,154.80

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Solution

The fourth proportional to 21,101,708.40, 31,652,562.60 and 19,149,154.80 is: 28,723,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101,708.40 : 31,652,562.60 = 19,149,154.80 : x
  2. Step 2: Convert to fraction form
    21,101,708.40/31,652,562.60 = 19,149,154.80/x
  3. Step 3: Cross multiply
    21,101,708.40x = 31,652,562.60 × 19,149,154.80
  4. Step 4: Simplify right side
    21,101,708.40x = 606,119,821,044,090.50
  5. Step 5: Solve for x
    x = 606,119,821,044,090.50/21,101,708.40
  6. Step 6: Final answer
    x = 28,723,732.20

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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.