Finding the Fourth Proportional to 19,820,569.20, 29,721,996.45 and 7,685,999.70
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Solution
The fourth proportional to 19,820,569.20, 29,721,996.45 and 7,685,999.70 is: 11,525,564.86
Step by Step Solution
- Step 1: Write the proportion equation
19,820,569.20 : 29,721,996.45 = 7,685,999.70 : x - Step 2: Convert to fraction form
19,820,569.20/29,721,996.45 = 7,685,999.70/x - Step 3: Cross multiply
19,820,569.20x = 29,721,996.45 × 7,685,999.70 - Step 4: Simplify right side
19,820,569.20x = 228,443,255,798,101.06 - Step 5: Solve for x
x = 228,443,255,798,101.06/19,820,569.20 - Step 6: Final answer
x = 11,525,564.86
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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.