Finding the Fourth Proportional to 21,013,345.47, 31,505,133.27 and 9,335,302.99
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Solution
The fourth proportional to 21,013,345.47, 31,505,133.27 and 9,335,302.99 is: 13,996,341.77
Step by Step Solution
- Step 1: Write the proportion equation
21,013,345.47 : 31,505,133.27 = 9,335,302.99 : x - Step 2: Convert to fraction form
21,013,345.47/31,505,133.27 = 9,335,302.99/x - Step 3: Cross multiply
21,013,345.47x = 31,505,133.27 × 9,335,302.99 - Step 4: Simplify right side
21,013,345.47x = 294,109,964,815,779.50 - Step 5: Solve for x
x = 294,109,964,815,779.50/21,013,345.47 - Step 6: Final answer
x = 13,996,341.77
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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.