Finding the Fourth Proportional to 19,853,006.40, 29,775,967.20 and 5,280,009.12
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Solution
The fourth proportional to 19,853,006.40, 29,775,967.20 and 5,280,009.12 is: 7,919,071.56
Step by Step Solution
- Step 1: Write the proportion equation
19,853,006.40 : 29,775,967.20 = 5,280,009.12 : x - Step 2: Convert to fraction form
19,853,006.40/29,775,967.20 = 5,280,009.12/x - Step 3: Cross multiply
19,853,006.40x = 29,775,967.20 × 5,280,009.12 - Step 4: Simplify right side
19,853,006.40x = 157,217,378,372,820.88 - Step 5: Solve for x
x = 157,217,378,372,820.88/19,853,006.40 - Step 6: Final answer
x = 7,919,071.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.