Home / 20,501,428.43-28,292,561.72-11,334,661.67

Finding the Fourth Proportional to 20,501,428.43, 28,292,561.72 and 11,334,661.67

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Solution

The fourth proportional to 20,501,428.43, 28,292,561.72 and 11,334,661.67 is: 15,642,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501,428.43 : 28,292,561.72 = 11,334,661.67 : x
  2. Step 2: Convert to fraction form
    20,501,428.43/28,292,561.72 = 11,334,661.67/x
  3. Step 3: Cross multiply
    20,501,428.43x = 28,292,561.72 × 11,334,661.67
  4. Step 4: Simplify right side
    20,501,428.43x = 320,686,614,898,629.94
  5. Step 5: Solve for x
    x = 320,686,614,898,629.94/20,501,428.43
  6. Step 6: Final answer
    x = 15,642,159.57

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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.