Finding the Fourth Proportional to 20,779,129.08, 31,175,421.36 and 9,995,026.62
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Solution
The fourth proportional to 20,779,129.08, 31,175,421.36 and 9,995,026.62 is: 14,995,776.06
Step by Step Solution
- Step 1: Write the proportion equation
20,779,129.08 : 31,175,421.36 = 9,995,026.62 : x - Step 2: Convert to fraction form
20,779,129.08/31,175,421.36 = 9,995,026.62/x - Step 3: Cross multiply
20,779,129.08x = 31,175,421.36 × 9,995,026.62 - Step 4: Simplify right side
20,779,129.08x = 311,599,166,382,916.56 - Step 5: Solve for x
x = 311,599,166,382,916.56/20,779,129.08 - Step 6: Final answer
x = 14,995,776.06
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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.