Finding the Fourth Proportional to 15,306,056.88, 21,122,357.76 and 8,430,538.74
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Solution
The fourth proportional to 15,306,056.88, 21,122,357.76 and 8,430,538.74 is: 11,634,143.06
Step by Step Solution
- Step 1: Write the proportion equation
15,306,056.88 : 21,122,357.76 = 8,430,538.74 : x - Step 2: Convert to fraction form
15,306,056.88/21,122,357.76 = 8,430,538.74/x - Step 3: Cross multiply
15,306,056.88x = 21,122,357.76 × 8,430,538.74 - Step 4: Simplify right side
15,306,056.88x = 178,072,855,375,819.66 - Step 5: Solve for x
x = 178,072,855,375,819.66/15,306,056.88 - Step 6: Final answer
x = 11,634,143.06
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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.