Finding the Fourth Proportional to 21,653,409.19, 29,871,688.17 and 19,175,155.46
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Solution
The fourth proportional to 21,653,409.19, 29,871,688.17 and 19,175,155.46 is: 26,452,844.42
Step by Step Solution
- Step 1: Write the proportion equation
21,653,409.19 : 29,871,688.17 = 19,175,155.46 : x - Step 2: Convert to fraction form
21,653,409.19/29,871,688.17 = 19,175,155.46/x - Step 3: Cross multiply
21,653,409.19x = 29,871,688.17 × 19,175,155.46 - Step 4: Simplify right side
21,653,409.19x = 572,794,264,512,393 - Step 5: Solve for x
x = 572,794,264,512,393/21,653,409.19 - Step 6: Final answer
x = 26,452,844.42
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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.