Home / 12,685,287.80-18,989,051.70-6,988,071.80

Finding the Fourth Proportional to 12,685,287.80, 18,989,051.70 and 6,988,071.80

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Solution

The fourth proportional to 12,685,287.80, 18,989,051.70 and 6,988,071.80 is: 10,460,689.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685,287.80 : 18,989,051.70 = 6,988,071.80 : x
  2. Step 2: Convert to fraction form
    12,685,287.80/18,989,051.70 = 6,988,071.80/x
  3. Step 3: Cross multiply
    12,685,287.80x = 18,989,051.70 × 6,988,071.80
  4. Step 4: Simplify right side
    12,685,287.80x = 132,696,856,693,512.05
  5. Step 5: Solve for x
    x = 132,696,856,693,512.05/12,685,287.80
  6. Step 6: Final answer
    x = 10,460,689.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.