Home / 20,790,721.54-31,033,802.93-18,336,382.66

Finding the Fourth Proportional to 20,790,721.54, 31,033,802.93 and 18,336,382.66

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Solution

The fourth proportional to 20,790,721.54, 31,033,802.93 and 18,336,382.66 is: 27,370,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,721.54 : 31,033,802.93 = 18,336,382.66 : x
  2. Step 2: Convert to fraction form
    20,790,721.54/31,033,802.93 = 18,336,382.66/x
  3. Step 3: Cross multiply
    20,790,721.54x = 31,033,802.93 × 18,336,382.66
  4. Step 4: Simplify right side
    20,790,721.54x = 569,047,685,919,509.25
  5. Step 5: Solve for x
    x = 569,047,685,919,509.25/20,790,721.54
  6. Step 6: Final answer
    x = 27,370,271.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.