Home / 13,640,450.76-18,821,012.04-7,838,111.46

Finding the Fourth Proportional to 13,640,450.76, 18,821,012.04 and 7,838,111.46

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Solution

The fourth proportional to 13,640,450.76, 18,821,012.04 and 7,838,111.46 is: 10,814,979.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,450.76 : 18,821,012.04 = 7,838,111.46 : x
  2. Step 2: Convert to fraction form
    13,640,450.76/18,821,012.04 = 7,838,111.46/x
  3. Step 3: Cross multiply
    13,640,450.76x = 18,821,012.04 × 7,838,111.46
  4. Step 4: Simplify right side
    13,640,450.76x = 147,521,190,159,521.97
  5. Step 5: Solve for x
    x = 147,521,190,159,521.97/13,640,450.76
  6. Step 6: Final answer
    x = 10,814,979.12

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1.5x scale

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.