Finding the Fourth Proportional to 28,409,021.67, 39,204,432.99 and 15,356,280.76
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Solution
The fourth proportional to 28,409,021.67, 39,204,432.99 and 15,356,280.76 is: 21,191,658.31
Step by Step Solution
- Step 1: Write the proportion equation
28,409,021.67 : 39,204,432.99 = 15,356,280.76 : x - Step 2: Convert to fraction form
28,409,021.67/39,204,432.99 = 15,356,280.76/x - Step 3: Cross multiply
28,409,021.67x = 39,204,432.99 × 15,356,280.76 - Step 4: Simplify right side
28,409,021.67x = 602,034,280,031,046.25 - Step 5: Solve for x
x = 602,034,280,031,046.25/28,409,021.67 - Step 6: Final answer
x = 21,191,658.31
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1.5x scale
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.