Finding the Fourth Proportional to 21,223,869.84, 29,280,626.28 and 13,060,936.08
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Solution
The fourth proportional to 21,223,869.84, 29,280,626.28 and 13,060,936.08 is: 18,018,975.39
Step by Step Solution
- Step 1: Write the proportion equation
21,223,869.84 : 29,280,626.28 = 13,060,936.08 : x - Step 2: Convert to fraction form
21,223,869.84/29,280,626.28 = 13,060,936.08/x - Step 3: Cross multiply
21,223,869.84x = 29,280,626.28 × 13,060,936.08 - Step 4: Simplify right side
21,223,869.84x = 382,432,388,225,448.19 - Step 5: Solve for x
x = 382,432,388,225,448.19/21,223,869.84 - Step 6: Final answer
x = 18,018,975.39
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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.