Home / 13,687,021.66-18,890,157.27-7,886,661.34

Finding the Fourth Proportional to 13,687,021.66, 18,890,157.27 and 7,886,661.34

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Solution

The fourth proportional to 13,687,021.66, 18,890,157.27 and 7,886,661.34 is: 10,884,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687,021.66 : 18,890,157.27 = 7,886,661.34 : x
  2. Step 2: Convert to fraction form
    13,687,021.66/18,890,157.27 = 7,886,661.34/x
  3. Step 3: Cross multiply
    13,687,021.66x = 18,890,157.27 × 7,886,661.34
  4. Step 4: Simplify right side
    13,687,021.66x = 148,980,273,047,828.94
  5. Step 5: Solve for x
    x = 148,980,273,047,828.94/13,687,021.66
  6. Step 6: Final answer
    x = 10,884,783.90

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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.