Finding the Fourth Proportional to 13,603,695.18, 18,773,947.74 and 7,492,122.06
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Solution
The fourth proportional to 13,603,695.18, 18,773,947.74 and 7,492,122.06 is: 10,339,595.69
Step by Step Solution
- Step 1: Write the proportion equation
13,603,695.18 : 18,773,947.74 = 7,492,122.06 : x - Step 2: Convert to fraction form
13,603,695.18/18,773,947.74 = 7,492,122.06/x - Step 3: Cross multiply
13,603,695.18x = 18,773,947.74 × 7,492,122.06 - Step 4: Simplify right side
13,603,695.18x = 140,656,708,016,141.12 - Step 5: Solve for x
x = 140,656,708,016,141.12/13,603,695.18 - Step 6: Final answer
x = 10,339,595.69
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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.