Finding the Fourth Proportional to 15,306,055.38, 21,122,355.69 and 8,430,537.24
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Solution
The fourth proportional to 15,306,055.38, 21,122,355.69 and 8,430,537.24 is: 11,634,140.99
Step by Step Solution
- Step 1: Write the proportion equation
15,306,055.38 : 21,122,355.69 = 8,430,537.24 : x - Step 2: Convert to fraction form
15,306,055.38/21,122,355.69 = 8,430,537.24/x - Step 3: Cross multiply
15,306,055.38x = 21,122,355.69 × 8,430,537.24 - Step 4: Simplify right side
15,306,055.38x = 178,072,806,241,070.91 - Step 5: Solve for x
x = 178,072,806,241,070.91/15,306,055.38 - Step 6: Final answer
x = 11,634,140.99
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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.