Finding the Fourth Proportional to 20,804,581.65, 31,206,969.68 and 7,341,409.65
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Solution
The fourth proportional to 20,804,581.65, 31,206,969.68 and 7,341,409.65 is: 11,012,148.78
Step by Step Solution
- Step 1: Write the proportion equation
20,804,581.65 : 31,206,969.68 = 7,341,409.65 : x - Step 2: Convert to fraction form
20,804,581.65/31,206,969.68 = 7,341,409.65/x - Step 3: Cross multiply
20,804,581.65x = 31,206,969.68 × 7,341,409.65 - Step 4: Simplify right side
20,804,581.65x = 229,103,148,356,009.41 - Step 5: Solve for x
x = 229,103,148,356,009.41/20,804,581.65 - Step 6: Final answer
x = 11,012,148.78
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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.