Finding the Fourth Proportional to 18,363,638.70, 27,512,280.45 and 15,709,430.70
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Solution
The fourth proportional to 18,363,638.70, 27,512,280.45 and 15,709,430.70 is: 23,535,763.81
Step by Step Solution
- Step 1: Write the proportion equation
18,363,638.70 : 27,512,280.45 = 15,709,430.70 : x - Step 2: Convert to fraction form
18,363,638.70/27,512,280.45 = 15,709,430.70/x - Step 3: Cross multiply
18,363,638.70x = 27,512,280.45 × 15,709,430.70 - Step 4: Simplify right side
18,363,638.70x = 432,202,263,128,239.81 - Step 5: Solve for x
x = 432,202,263,128,239.81/18,363,638.70 - Step 6: Final answer
x = 23,535,763.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.