Finding the Fourth Proportional to 20,756,671.32, 31,135,117.86 and 13,613,439.99
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Solution
The fourth proportional to 20,756,671.32, 31,135,117.86 and 13,613,439.99 is: 20,420,232.71
Step by Step Solution
- Step 1: Write the proportion equation
20,756,671.32 : 31,135,117.86 = 13,613,439.99 : x - Step 2: Convert to fraction form
20,756,671.32/31,135,117.86 = 13,613,439.99/x - Step 3: Cross multiply
20,756,671.32x = 31,135,117.86 × 13,613,439.99 - Step 4: Simplify right side
20,756,671.32x = 423,856,058,568,687.25 - Step 5: Solve for x
x = 423,856,058,568,687.25/20,756,671.32 - Step 6: Final answer
x = 20,420,232.71
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.