Finding the Fourth Proportional to 21,243,205.33, 31,864,702.90 and 18,355,785.68
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Solution
The fourth proportional to 21,243,205.33, 31,864,702.90 and 18,355,785.68 is: 27,533,587.71
Step by Step Solution
- Step 1: Write the proportion equation
21,243,205.33 : 31,864,702.90 = 18,355,785.68 : x - Step 2: Convert to fraction form
21,243,205.33/31,864,702.90 = 18,355,785.68/x - Step 3: Cross multiply
21,243,205.33x = 31,864,702.90 × 18,355,785.68 - Step 4: Simplify right side
21,243,205.33x = 584,901,657,219,495.12 - Step 5: Solve for x
x = 584,901,657,219,495.12/21,243,205.33 - Step 6: Final answer
x = 27,533,587.71
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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.