Finding the Fourth Proportional to 13,125,916.41, 18,113,767.98 and 7,245,553.86
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Solution
The fourth proportional to 13,125,916.41, 18,113,767.98 and 7,245,553.86 is: 9,998,866.17
Step by Step Solution
- Step 1: Write the proportion equation
13,125,916.41 : 18,113,767.98 = 7,245,553.86 : x - Step 2: Convert to fraction form
13,125,916.41/18,113,767.98 = 7,245,553.86/x - Step 3: Cross multiply
13,125,916.41x = 18,113,767.98 × 7,245,553.86 - Step 4: Simplify right side
13,125,916.41x = 131,244,281,506,633.41 - Step 5: Solve for x
x = 131,244,281,506,633.41/13,125,916.41 - Step 6: Final answer
x = 9,998,866.17
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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.