Finding the Fourth Proportional to 27,730,781.08, 38,269,605.87 and 15,340,661.51
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Solution
The fourth proportional to 27,730,781.08, 38,269,605.87 and 15,340,661.51 is: 21,170,736.88
Step by Step Solution
- Step 1: Write the proportion equation
27,730,781.08 : 38,269,605.87 = 15,340,661.51 : x - Step 2: Convert to fraction form
27,730,781.08/38,269,605.87 = 15,340,661.51/x - Step 3: Cross multiply
27,730,781.08x = 38,269,605.87 × 15,340,661.51 - Step 4: Simplify right side
27,730,781.08x = 587,081,069,581,431 - Step 5: Solve for x
x = 587,081,069,581,431/27,730,781.08 - Step 6: Final answer
x = 21,170,736.88
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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.