Finding the Fourth Proportional to 13,228,953.84, 18,218,154.96 and 11,910,980.16
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Solution
The fourth proportional to 13,228,953.84, 18,218,154.96 and 11,910,980.16 is: 16,403,117.35
Step by Step Solution
- Step 1: Write the proportion equation
13,228,953.84 : 18,218,154.96 = 11,910,980.16 : x - Step 2: Convert to fraction form
13,228,953.84/18,218,154.96 = 11,910,980.16/x - Step 3: Cross multiply
13,228,953.84x = 18,218,154.96 × 11,910,980.16 - Step 4: Simplify right side
13,228,953.84x = 216,996,082,280,365.59 - Step 5: Solve for x
x = 216,996,082,280,365.59/13,228,953.84 - Step 6: Final answer
x = 16,403,117.35
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1.5x scale
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.