Home / 13,151,912.33-18,149,068.13-7,191,209.81

Finding the Fourth Proportional to 13,151,912.33, 18,149,068.13 and 7,191,209.81

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Solution

The fourth proportional to 13,151,912.33, 18,149,068.13 and 7,191,209.81 is: 9,923,557.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151,912.33 : 18,149,068.13 = 7,191,209.81 : x
  2. Step 2: Convert to fraction form
    13,151,912.33/18,149,068.13 = 7,191,209.81/x
  3. Step 3: Cross multiply
    13,151,912.33x = 18,149,068.13 × 7,191,209.81
  4. Step 4: Simplify right side
    13,151,912.33x = 130,513,756,778,814.34
  5. Step 5: Solve for x
    x = 130,513,756,778,814.34/13,151,912.33
  6. Step 6: Final answer
    x = 9,923,557.39

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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.