Home / 13,071,912.17-18,038,876.63-7,111,121.36

Finding the Fourth Proportional to 13,071,912.17, 18,038,876.63 and 7,111,121.36

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Solution

The fourth proportional to 13,071,912.17, 18,038,876.63 and 7,111,121.36 is: 9,813,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071,912.17 : 18,038,876.63 = 7,111,121.36 : x
  2. Step 2: Convert to fraction form
    13,071,912.17/18,038,876.63 = 7,111,121.36/x
  3. Step 3: Cross multiply
    13,071,912.17x = 18,038,876.63 × 7,111,121.36
  4. Step 4: Simplify right side
    13,071,912.17x = 128,276,640,788,247.83
  5. Step 5: Solve for x
    x = 128,276,640,788,247.83/13,071,912.17
  6. Step 6: Final answer
    x = 9,813,150.45

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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.