Finding the Fourth Proportional to 15,730,478.64, 21,718,500.84 and 9,858,937.68
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Solution
The fourth proportional to 15,730,478.64, 21,718,500.84 and 9,858,937.68 is: 13,611,877.37
Step by Step Solution
- Step 1: Write the proportion equation
15,730,478.64 : 21,718,500.84 = 9,858,937.68 : x - Step 2: Convert to fraction form
15,730,478.64/21,718,500.84 = 9,858,937.68/x - Step 3: Cross multiply
15,730,478.64x = 21,718,500.84 × 9,858,937.68 - Step 4: Simplify right side
15,730,478.64x = 214,121,346,284,587.66 - Step 5: Solve for x
x = 214,121,346,284,587.66/15,730,478.64 - Step 6: Final answer
x = 13,611,877.37
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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.