Finding the Fourth Proportional to 13,390,126.12, 20,068,378.62 and 7,241,862.70
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Solution
The fourth proportional to 13,390,126.12, 20,068,378.62 and 7,241,862.70 is: 10,853,702.29
Step by Step Solution
- Step 1: Write the proportion equation
13,390,126.12 : 20,068,378.62 = 7,241,862.70 : x - Step 2: Convert to fraction form
13,390,126.12/20,068,378.62 = 7,241,862.70/x - Step 3: Cross multiply
13,390,126.12x = 20,068,378.62 × 7,241,862.70 - Step 4: Simplify right side
13,390,126.12x = 145,332,442,577,655.50 - Step 5: Solve for x
x = 145,332,442,577,655.50/13,390,126.12 - Step 6: Final answer
x = 10,853,702.29
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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.