Home / 20,501,427.81-28,292,560.87-11,334,661.05

Finding the Fourth Proportional to 20,501,427.81, 28,292,560.87 and 11,334,661.05

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Solution

The fourth proportional to 20,501,427.81, 28,292,560.87 and 11,334,661.05 is: 15,642,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501,427.81 : 28,292,560.87 = 11,334,661.05 : x
  2. Step 2: Convert to fraction form
    20,501,427.81/28,292,560.87 = 11,334,661.05/x
  3. Step 3: Cross multiply
    20,501,427.81x = 28,292,560.87 × 11,334,661.05
  4. Step 4: Simplify right side
    20,501,427.81x = 320,686,587,797,011.19
  5. Step 5: Solve for x
    x = 320,686,587,797,011.19/20,501,427.81
  6. Step 6: Final answer
    x = 15,642,158.72

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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.