Finding the Fourth Proportional to 13,420,831.90, 20,125,999.05 and 4,896,780.70
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Solution
The fourth proportional to 13,420,831.90, 20,125,999.05 and 4,896,780.70 is: 7,343,255.95
Step by Step Solution
- Step 1: Write the proportion equation
13,420,831.90 : 20,125,999.05 = 4,896,780.70 : x - Step 2: Convert to fraction form
13,420,831.90/20,125,999.05 = 4,896,780.70/x - Step 3: Cross multiply
13,420,831.90x = 20,125,999.05 × 4,896,780.70 - Step 4: Simplify right side
13,420,831.90x = 98,552,603,716,258.34 - Step 5: Solve for x
x = 98,552,603,716,258.34/13,420,831.90 - Step 6: Final answer
x = 7,343,255.95
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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.