Finding the Fourth Proportional to 12,402,471.70, 18,603,707.55 and 9,043,239.70
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Solution
The fourth proportional to 12,402,471.70, 18,603,707.55 and 9,043,239.70 is: 13,564,859.55
Step by Step Solution
- Step 1: Write the proportion equation
12,402,471.70 : 18,603,707.55 = 9,043,239.70 : x - Step 2: Convert to fraction form
12,402,471.70/18,603,707.55 = 9,043,239.70/x - Step 3: Cross multiply
12,402,471.70x = 18,603,707.55 × 9,043,239.70 - Step 4: Simplify right side
12,402,471.70x = 168,237,786,683,349.72 - Step 5: Solve for x
x = 168,237,786,683,349.72/12,402,471.70 - Step 6: Final answer
x = 13,564,859.55
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1.5x scale
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.