Finding the Fourth Proportional to 15,730,484.64, 21,718,509.12 and 9,858,943.68
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Solution
The fourth proportional to 15,730,484.64, 21,718,509.12 and 9,858,943.68 is: 13,611,885.66
Step by Step Solution
- Step 1: Write the proportion equation
15,730,484.64 : 21,718,509.12 = 9,858,943.68 : x - Step 2: Convert to fraction form
15,730,484.64/21,718,509.12 = 9,858,943.68/x - Step 3: Cross multiply
15,730,484.64x = 21,718,509.12 × 9,858,943.68 - Step 4: Simplify right side
15,730,484.64x = 214,121,558,227,646.38 - Step 5: Solve for x
x = 214,121,558,227,646.38/15,730,484.64 - Step 6: Final answer
x = 13,611,885.66
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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.