Finding the Fourth Proportional to 15,128,616.24, 20,877,539.40 and 8,253,242.28
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Solution
The fourth proportional to 15,128,616.24, 20,877,539.40 and 8,253,242.28 is: 11,389,501.07
Step by Step Solution
- Step 1: Write the proportion equation
15,128,616.24 : 20,877,539.40 = 8,253,242.28 : x - Step 2: Convert to fraction form
15,128,616.24/20,877,539.40 = 8,253,242.28/x - Step 3: Cross multiply
15,128,616.24x = 20,877,539.40 × 8,253,242.28 - Step 4: Simplify right side
15,128,616.24x = 172,307,390,878,445.81 - Step 5: Solve for x
x = 172,307,390,878,445.81/15,128,616.24 - Step 6: Final answer
x = 11,389,501.07
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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.