Finding the Fourth Proportional to 15,433,690.68, 21,298,884.21 and 8,464,645.71
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Solution
The fourth proportional to 15,433,690.68, 21,298,884.21 and 8,464,645.71 is: 11,681,425.56
Step by Step Solution
- Step 1: Write the proportion equation
15,433,690.68 : 21,298,884.21 = 8,464,645.71 : x - Step 2: Convert to fraction form
15,433,690.68/21,298,884.21 = 8,464,645.71/x - Step 3: Cross multiply
15,433,690.68x = 21,298,884.21 × 8,464,645.71 - Step 4: Simplify right side
15,433,690.68x = 180,287,508,855,963.28 - Step 5: Solve for x
x = 180,287,508,855,963.28/15,433,690.68 - Step 6: Final answer
x = 11,681,425.56
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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.