Finding the Fourth Proportional to 13,420,526.64, 18,520,851.15 and 7,619,848.08
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Solution
The fourth proportional to 13,420,526.64, 18,520,851.15 and 7,619,848.08 is: 10,515,688.08
Step by Step Solution
- Step 1: Write the proportion equation
13,420,526.64 : 18,520,851.15 = 7,619,848.08 : x - Step 2: Convert to fraction form
13,420,526.64/18,520,851.15 = 7,619,848.08/x - Step 3: Cross multiply
13,420,526.64x = 18,520,851.15 × 7,619,848.08 - Step 4: Simplify right side
13,420,526.64x = 141,126,072,075,293.28 - Step 5: Solve for x
x = 141,126,072,075,293.28/13,420,526.64 - Step 6: Final answer
x = 10,515,688.08
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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.