Finding the Fourth Proportional to 21,425,931.19, 29,569,608.56 and 12,135,154.01
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Solution
The fourth proportional to 21,425,931.19, 29,569,608.56 and 12,135,154.01 is: 16,747,545.33
Step by Step Solution
- Step 1: Write the proportion equation
21,425,931.19 : 29,569,608.56 = 12,135,154.01 : x - Step 2: Convert to fraction form
21,425,931.19/29,569,608.56 = 12,135,154.01/x - Step 3: Cross multiply
21,425,931.19x = 29,569,608.56 × 12,135,154.01 - Step 4: Simplify right side
21,425,931.19x = 358,831,753,871,573 - Step 5: Solve for x
x = 358,831,753,871,573/21,425,931.19 - Step 6: Final answer
x = 16,747,545.33
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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.