Home / 20,517,412.65-28,313,192.75-11,815,913.13

Finding the Fourth Proportional to 20,517,412.65, 28,313,192.75 and 11,815,913.13

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Solution

The fourth proportional to 20,517,412.65, 28,313,192.75 and 11,815,913.13 is: 16,305,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517,412.65 : 28,313,192.75 = 11,815,913.13 : x
  2. Step 2: Convert to fraction form
    20,517,412.65/28,313,192.75 = 11,815,913.13/x
  3. Step 3: Cross multiply
    20,517,412.65x = 28,313,192.75 × 11,815,913.13
  4. Step 4: Simplify right side
    20,517,412.65x = 334,546,225,966,945.81
  5. Step 5: Solve for x
    x = 334,546,225,966,945.81/20,517,412.65
  6. Step 6: Final answer
    x = 16,305,478.26

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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.