Finding the Fourth Proportional to 19,929,959.70, 27,497,611.98 and 12,970,881.96
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Solution
The fourth proportional to 19,929,959.70, 27,497,611.98 and 12,970,881.96 is: 17,896,086.32
Step by Step Solution
- Step 1: Write the proportion equation
19,929,959.70 : 27,497,611.98 = 12,970,881.96 : x - Step 2: Convert to fraction form
19,929,959.70/27,497,611.98 = 12,970,881.96/x - Step 3: Cross multiply
19,929,959.70x = 27,497,611.98 × 12,970,881.96 - Step 4: Simplify right side
19,929,959.70x = 356,668,279,174,461.94 - Step 5: Solve for x
x = 356,668,279,174,461.94/19,929,959.70 - Step 6: Final answer
x = 17,896,086.32
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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.