Finding the Fourth Proportional to 20,273,420.94, 27,970,309.65 and 15,373,538.70
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Solution
The fourth proportional to 20,273,420.94, 27,970,309.65 and 15,373,538.70 is: 21,210,166.71
Step by Step Solution
- Step 1: Write the proportion equation
20,273,420.94 : 27,970,309.65 = 15,373,538.70 : x - Step 2: Convert to fraction form
20,273,420.94/27,970,309.65 = 15,373,538.70/x - Step 3: Cross multiply
20,273,420.94x = 27,970,309.65 × 15,373,538.70 - Step 4: Simplify right side
20,273,420.94x = 430,002,637,855,258.44 - Step 5: Solve for x
x = 430,002,637,855,258.44/20,273,420.94 - Step 6: Final answer
x = 21,210,166.71
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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.