Finding the Fourth Proportional to 21,528,056.92, 29,709,316.26 and 13,156,782.04
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Solution
The fourth proportional to 21,528,056.92, 29,709,316.26 and 13,156,782.04 is: 18,156,724.50
Step by Step Solution
- Step 1: Write the proportion equation
21,528,056.92 : 29,709,316.26 = 13,156,782.04 : x - Step 2: Convert to fraction form
21,528,056.92/29,709,316.26 = 13,156,782.04/x - Step 3: Cross multiply
21,528,056.92x = 29,709,316.26 × 13,156,782.04 - Step 4: Simplify right side
21,528,056.92x = 390,878,998,590,247.94 - Step 5: Solve for x
x = 390,878,998,590,247.94/21,528,056.92 - Step 6: Final answer
x = 18,156,724.50
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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.