Finding the Fourth Proportional to 28,731,224.13, 39,649,926.63 and 15,679,323.74
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Solution
The fourth proportional to 28,731,224.13, 39,649,926.63 and 15,679,323.74 is: 21,637,923.72
Step by Step Solution
- Step 1: Write the proportion equation
28,731,224.13 : 39,649,926.63 = 15,679,323.74 : x - Step 2: Convert to fraction form
28,731,224.13/39,649,926.63 = 15,679,323.74/x - Step 3: Cross multiply
28,731,224.13x = 39,649,926.63 × 15,679,323.74 - Step 4: Simplify right side
28,731,224.13x = 621,684,035,998,142 - Step 5: Solve for x
x = 621,684,035,998,142/28,731,224.13 - Step 6: Final answer
x = 21,637,923.72
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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.