Finding the Fourth Proportional to 15,133,060.80, 20,884,127.40 and 8,257,920.12
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Solution
The fourth proportional to 15,133,060.80, 20,884,127.40 and 8,257,920.12 is: 11,396,204.52
Step by Step Solution
- Step 1: Write the proportion equation
15,133,060.80 : 20,884,127.40 = 8,257,920.12 : x - Step 2: Convert to fraction form
15,133,060.80/20,884,127.40 = 8,257,920.12/x - Step 3: Cross multiply
15,133,060.80x = 20,884,127.40 × 8,257,920.12 - Step 4: Simplify right side
15,133,060.80x = 172,459,455,845,103.28 - Step 5: Solve for x
x = 172,459,455,845,103.28/15,133,060.80 - Step 6: Final answer
x = 11,396,204.52
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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.