Finding the Fourth Proportional to 18,521,208.40, 27,781,812.60 and 13,146,437.20
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Solution
The fourth proportional to 18,521,208.40, 27,781,812.60 and 13,146,437.20 is: 19,719,655.80
Step by Step Solution
- Step 1: Write the proportion equation
18,521,208.40 : 27,781,812.60 = 13,146,437.20 : x - Step 2: Convert to fraction form
18,521,208.40/27,781,812.60 = 13,146,437.20/x - Step 3: Cross multiply
18,521,208.40x = 27,781,812.60 × 13,146,437.20 - Step 4: Simplify right side
18,521,208.40x = 365,231,854,648,068.75 - Step 5: Solve for x
x = 365,231,854,648,068.75/18,521,208.40 - Step 6: Final answer
x = 19,719,655.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.