Home / 21,048,709.79-29,047,219.43-11,390,917.79

Finding the Fourth Proportional to 21,048,709.79, 29,047,219.43 and 11,390,917.79

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Solution

The fourth proportional to 21,048,709.79, 29,047,219.43 and 11,390,917.79 is: 15,719,466.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048,709.79 : 29,047,219.43 = 11,390,917.79 : x
  2. Step 2: Convert to fraction form
    21,048,709.79/29,047,219.43 = 11,390,917.79/x
  3. Step 3: Cross multiply
    21,048,709.79x = 29,047,219.43 × 11,390,917.79
  4. Step 4: Simplify right side
    21,048,709.79x = 330,874,488,353,030
  5. Step 5: Solve for x
    x = 330,874,488,353,030/21,048,709.79
  6. Step 6: Final answer
    x = 15,719,466.50

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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.