Finding the Fourth Proportional to 21,481,905.98, 29,645,671.86 and 13,226,730.74
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Solution
The fourth proportional to 21,481,905.98, 29,645,671.86 and 13,226,730.74 is: 18,253,283.47
Step by Step Solution
- Step 1: Write the proportion equation
21,481,905.98 : 29,645,671.86 = 13,226,730.74 : x - Step 2: Convert to fraction form
21,481,905.98/29,645,671.86 = 13,226,730.74/x - Step 3: Cross multiply
21,481,905.98x = 29,645,671.86 × 13,226,730.74 - Step 4: Simplify right side
21,481,905.98x = 392,115,319,298,615 - Step 5: Solve for x
x = 392,115,319,298,615/21,481,905.98 - Step 6: Final answer
x = 18,253,283.47
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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.