Home / 20,736,021.60-31,104,032.40-10,639,663.20

Finding the Fourth Proportional to 20,736,021.60, 31,104,032.40 and 10,639,663.20

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Solution

The fourth proportional to 20,736,021.60, 31,104,032.40 and 10,639,663.20 is: 15,959,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,021.60 : 31,104,032.40 = 10,639,663.20 : x
  2. Step 2: Convert to fraction form
    20,736,021.60/31,104,032.40 = 10,639,663.20/x
  3. Step 3: Cross multiply
    20,736,021.60x = 31,104,032.40 × 10,639,663.20
  4. Step 4: Simplify right side
    20,736,021.60x = 330,936,428,897,887.62
  5. Step 5: Solve for x
    x = 330,936,428,897,887.62/20,736,021.60
  6. Step 6: Final answer
    x = 15,959,494.80

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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.