Finding the Fourth Proportional to 19,890,988.84, 27,447,109.14 and 12,546,047.68
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Solution
The fourth proportional to 19,890,988.84, 27,447,109.14 and 12,546,047.68 is: 17,311,997.04
Step by Step Solution
- Step 1: Write the proportion equation
19,890,988.84 : 27,447,109.14 = 12,546,047.68 : x - Step 2: Convert to fraction form
19,890,988.84/27,447,109.14 = 12,546,047.68/x - Step 3: Cross multiply
19,890,988.84x = 27,447,109.14 × 12,546,047.68 - Step 4: Simplify right side
19,890,988.84x = 344,352,739,948,603.81 - Step 5: Solve for x
x = 344,352,739,948,603.81/19,890,988.84 - Step 6: Final answer
x = 17,311,997.04
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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.