Finding the Fourth Proportional to 13,147,278.18, 18,143,205.54 and 7,346,064.45
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Solution
The fourth proportional to 13,147,278.18, 18,143,205.54 and 7,346,064.45 is: 10,137,547.51
Step by Step Solution
- Step 1: Write the proportion equation
13,147,278.18 : 18,143,205.54 = 7,346,064.45 : x - Step 2: Convert to fraction form
13,147,278.18/18,143,205.54 = 7,346,064.45/x - Step 3: Cross multiply
13,147,278.18x = 18,143,205.54 × 7,346,064.45 - Step 4: Simplify right side
13,147,278.18x = 133,281,157,226,437.05 - Step 5: Solve for x
x = 133,281,157,226,437.05/13,147,278.18 - Step 6: Final answer
x = 10,137,547.51
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1.5x scale
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.