Finding the Fourth Proportional to 15,687,564.99, 21,642,124.31 and 9,796,972.60
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Solution
The fourth proportional to 15,687,564.99, 21,642,124.31 and 9,796,972.60 is: 13,515,628.39
Step by Step Solution
- Step 1: Write the proportion equation
15,687,564.99 : 21,642,124.31 = 9,796,972.60 : x - Step 2: Convert to fraction form
15,687,564.99/21,642,124.31 = 9,796,972.60/x - Step 3: Cross multiply
15,687,564.99x = 21,642,124.31 × 9,796,972.60 - Step 4: Simplify right side
15,687,564.99x = 212,027,298,736,374.50 - Step 5: Solve for x
x = 212,027,298,736,374.50/15,687,564.99 - Step 6: Final answer
x = 13,515,628.39
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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.