Finding the Fourth Proportional to 15,829,543.68, 21,814,915.20 and 12,686,236.92
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Solution
The fourth proportional to 15,829,543.68, 21,814,915.20 and 12,686,236.92 is: 17,483,080.26
Step by Step Solution
- Step 1: Write the proportion equation
15,829,543.68 : 21,814,915.20 = 12,686,236.92 : x - Step 2: Convert to fraction form
15,829,543.68/21,814,915.20 = 12,686,236.92/x - Step 3: Cross multiply
15,829,543.68x = 21,814,915.20 × 12,686,236.92 - Step 4: Simplify right side
15,829,543.68x = 276,749,182,616,909.19 - Step 5: Solve for x
x = 276,749,182,616,909.19/15,829,543.68 - Step 6: Final answer
x = 17,483,080.26
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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.