Finding the Fourth Proportional to 19,658,612.88, 27,128,145.87 and 11,399,023.71
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Solution
The fourth proportional to 19,658,612.88, 27,128,145.87 and 11,399,023.71 is: 15,730,223.69
Step by Step Solution
- Step 1: Write the proportion equation
19,658,612.88 : 27,128,145.87 = 11,399,023.71 : x - Step 2: Convert to fraction form
19,658,612.88/27,128,145.87 = 11,399,023.71/x - Step 3: Cross multiply
19,658,612.88x = 27,128,145.87 × 11,399,023.71 - Step 4: Simplify right side
19,658,612.88x = 309,234,377,980,468.62 - Step 5: Solve for x
x = 309,234,377,980,468.62/19,658,612.88 - Step 6: Final answer
x = 15,730,223.69
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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.