Finding the Fourth Proportional to 21,160,298.13, 29,201,531.39 and 11,869,927.61
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Solution
The fourth proportional to 21,160,298.13, 29,201,531.39 and 11,869,927.61 is: 16,380,679.58
Step by Step Solution
- Step 1: Write the proportion equation
21,160,298.13 : 29,201,531.39 = 11,869,927.61 : x - Step 2: Convert to fraction form
21,160,298.13/29,201,531.39 = 11,869,927.61/x - Step 3: Cross multiply
21,160,298.13x = 29,201,531.39 × 11,869,927.61 - Step 4: Simplify right side
21,160,298.13x = 346,620,063,495,085.44 - Step 5: Solve for x
x = 346,620,063,495,085.44/21,160,298.13 - Step 6: Final answer
x = 16,380,679.58
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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.