Finding the Fourth Proportional to 11,356,342.40, 15,671,989.76 and 6,199,921.28
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Solution
The fourth proportional to 11,356,342.40, 15,671,989.76 and 6,199,921.28 is: 8,556,020.89
Step by Step Solution
- Step 1: Write the proportion equation
11,356,342.40 : 15,671,989.76 = 6,199,921.28 : x - Step 2: Convert to fraction form
11,356,342.40/15,671,989.76 = 6,199,921.28/x - Step 3: Cross multiply
11,356,342.40x = 15,671,989.76 × 6,199,921.28 - Step 4: Simplify right side
11,356,342.40x = 97,165,102,812,966.09 - Step 5: Solve for x
x = 97,165,102,812,966.09/11,356,342.40 - Step 6: Final answer
x = 8,556,020.89
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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.