Finding the Fourth Proportional to 20,643,635.36, 28,487,101.20 and 11,475,627.68
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Solution
The fourth proportional to 20,643,635.36, 28,487,101.20 and 11,475,627.68 is: 15,835,746.05
Step by Step Solution
- Step 1: Write the proportion equation
20,643,635.36 : 28,487,101.20 = 11,475,627.68 : x - Step 2: Convert to fraction form
20,643,635.36/28,487,101.20 = 11,475,627.68/x - Step 3: Cross multiply
20,643,635.36x = 28,487,101.20 × 11,475,627.68 - Step 4: Simplify right side
20,643,635.36x = 326,907,367,053,681.19 - Step 5: Solve for x
x = 326,907,367,053,681.19/20,643,635.36 - Step 6: Final answer
x = 15,835,746.05
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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.