Finding the Fourth Proportional to 13,128,968.36, 18,103,693.38 and 8,536,773.80
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Solution
The fourth proportional to 13,128,968.36, 18,103,693.38 and 8,536,773.80 is: 11,771,460.72
Step by Step Solution
- Step 1: Write the proportion equation
13,128,968.36 : 18,103,693.38 = 8,536,773.80 : x - Step 2: Convert to fraction form
13,128,968.36/18,103,693.38 = 8,536,773.80/x - Step 3: Cross multiply
13,128,968.36x = 18,103,693.38 × 8,536,773.80 - Step 4: Simplify right side
13,128,968.36x = 154,547,135,329,617.44 - Step 5: Solve for x
x = 154,547,135,329,617.44/13,128,968.36 - Step 6: Final answer
x = 11,771,460.72
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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.