Finding the Fourth Proportional to 28,730,738.16, 39,649,259.96 and 15,678,838.12
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Solution
The fourth proportional to 28,730,738.16, 39,649,259.96 and 15,678,838.12 is: 21,637,255.72
Step by Step Solution
- Step 1: Write the proportion equation
28,730,738.16 : 39,649,259.96 = 15,678,838.12 : x - Step 2: Convert to fraction form
28,730,738.16/39,649,259.96 = 15,678,838.12/x - Step 3: Cross multiply
28,730,738.16x = 39,649,259.96 × 15,678,838.12 - Step 4: Simplify right side
28,730,738.16x = 621,654,328,490,637.62 - Step 5: Solve for x
x = 621,654,328,490,637.62/28,730,738.16 - Step 6: Final answer
x = 21,637,255.72
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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.