Finding the Fourth Proportional to 13,420,830.40, 20,125,996.80 and 4,896,779.20
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Solution
The fourth proportional to 13,420,830.40, 20,125,996.80 and 4,896,779.20 is: 7,343,253.70
Step by Step Solution
- Step 1: Write the proportion equation
13,420,830.40 : 20,125,996.80 = 4,896,779.20 : x - Step 2: Convert to fraction form
13,420,830.40/20,125,996.80 = 4,896,779.20/x - Step 3: Cross multiply
13,420,830.40x = 20,125,996.80 × 4,896,779.20 - Step 4: Simplify right side
13,420,830.40x = 98,552,562,509,506.56 - Step 5: Solve for x
x = 98,552,562,509,506.56/13,420,830.40 - Step 6: Final answer
x = 7,343,253.70
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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.