Finding the Fourth Proportional to 20,706,628.48, 28,575,174.72 and 11,539,070.08
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Solution
The fourth proportional to 20,706,628.48, 28,575,174.72 and 11,539,070.08 is: 15,923,931.99
Step by Step Solution
- Step 1: Write the proportion equation
20,706,628.48 : 28,575,174.72 = 11,539,070.08 : x - Step 2: Convert to fraction form
20,706,628.48/28,575,174.72 = 11,539,070.08/x - Step 3: Cross multiply
20,706,628.48x = 28,575,174.72 × 11,539,070.08 - Step 4: Simplify right side
20,706,628.48x = 329,730,943,642,324.38 - Step 5: Solve for x
x = 329,730,943,642,324.38/20,706,628.48 - Step 6: Final answer
x = 15,923,931.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.