Finding the Fourth Proportional to 15,346,435.14, 21,178,257.57 and 8,470,924.02
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Solution
The fourth proportional to 15,346,435.14, 21,178,257.57 and 8,470,924.02 is: 11,689,972.89
Step by Step Solution
- Step 1: Write the proportion equation
15,346,435.14 : 21,178,257.57 = 8,470,924.02 : x - Step 2: Convert to fraction form
15,346,435.14/21,178,257.57 = 8,470,924.02/x - Step 3: Cross multiply
15,346,435.14x = 21,178,257.57 × 8,470,924.02 - Step 4: Simplify right side
15,346,435.14x = 179,399,410,751,459.81 - Step 5: Solve for x
x = 179,399,410,751,459.81/15,346,435.14 - Step 6: Final answer
x = 11,689,972.89
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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.