Finding the Fourth Proportional to 27,788,679.74, 38,348,603.21 and 15,398,980.12
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Solution
The fourth proportional to 27,788,679.74, 38,348,603.21 and 15,398,980.12 is: 21,250,717.34
Step by Step Solution
- Step 1: Write the proportion equation
27,788,679.74 : 38,348,603.21 = 15,398,980.12 : x - Step 2: Convert to fraction form
27,788,679.74/38,348,603.21 = 15,398,980.12/x - Step 3: Cross multiply
27,788,679.74x = 38,348,603.21 × 15,398,980.12 - Step 4: Simplify right side
27,788,679.74x = 590,529,378,359,595.38 - Step 5: Solve for x
x = 590,529,378,359,595.38/27,788,679.74 - Step 6: Final answer
x = 21,250,717.34
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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.