Finding the Fourth Proportional to 20,804,595.65, 31,206,990.68 and 7,341,423.65
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Solution
The fourth proportional to 20,804,595.65, 31,206,990.68 and 7,341,423.65 is: 11,012,169.78
Step by Step Solution
- Step 1: Write the proportion equation
20,804,595.65 : 31,206,990.68 = 7,341,423.65 : x - Step 2: Convert to fraction form
20,804,595.65/31,206,990.68 = 7,341,423.65/x - Step 3: Cross multiply
20,804,595.65x = 31,206,990.68 × 7,341,423.65 - Step 4: Simplify right side
20,804,595.65x = 229,103,739,423,481.59 - Step 5: Solve for x
x = 229,103,739,423,481.59/20,804,595.65 - Step 6: Final answer
x = 11,012,169.78
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1.5x scale
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.