Finding the Fourth Proportional to 20,968,991.14, 31,438,862.93 and 9,291,011.03
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Solution
The fourth proportional to 20,968,991.14, 31,438,862.93 and 9,291,011.03 is: 13,930,036.99
Step by Step Solution
- Step 1: Write the proportion equation
20,968,991.14 : 31,438,862.93 = 9,291,011.03 : x - Step 2: Convert to fraction form
20,968,991.14/31,438,862.93 = 9,291,011.03/x - Step 3: Cross multiply
20,968,991.14x = 31,438,862.93 × 9,291,011.03 - Step 4: Simplify right side
20,968,991.14x = 292,098,822,206,833.06 - Step 5: Solve for x
x = 292,098,822,206,833.06/20,968,991.14 - Step 6: Final answer
x = 13,930,036.99
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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.