Finding the Fourth Proportional to 19,982,856.60, 27,577,013.64 and 12,246,407.28
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Solution
The fourth proportional to 19,982,856.60, 27,577,013.64 and 12,246,407.28 is: 16,900,453.59
Step by Step Solution
- Step 1: Write the proportion equation
19,982,856.60 : 27,577,013.64 = 12,246,407.28 : x - Step 2: Convert to fraction form
19,982,856.60/27,577,013.64 = 12,246,407.28/x - Step 3: Cross multiply
19,982,856.60x = 27,577,013.64 × 12,246,407.28 - Step 4: Simplify right side
19,982,856.60x = 337,719,340,601,555.31 - Step 5: Solve for x
x = 337,719,340,601,555.31/19,982,856.60 - Step 6: Final answer
x = 16,900,453.59
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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.