Home / 21,215,999.60-31,823,999.40-13,153,842.80

Finding the Fourth Proportional to 21,215,999.60, 31,823,999.40 and 13,153,842.80

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Solution

The fourth proportional to 21,215,999.60, 31,823,999.40 and 13,153,842.80 is: 19,730,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215,999.60 : 31,823,999.40 = 13,153,842.80 : x
  2. Step 2: Convert to fraction form
    21,215,999.60/31,823,999.40 = 13,153,842.80/x
  3. Step 3: Cross multiply
    21,215,999.60x = 31,823,999.40 × 13,153,842.80
  4. Step 4: Simplify right side
    21,215,999.60x = 418,607,885,374,894.31
  5. Step 5: Solve for x
    x = 418,607,885,374,894.31/21,215,999.60
  6. Step 6: Final answer
    x = 19,730,764.20

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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.