Finding the Fourth Proportional to 15,421,177.98, 21,280,495.56 and 9,229,636.08
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Solution
The fourth proportional to 15,421,177.98, 21,280,495.56 and 9,229,636.08 is: 12,736,460.85
Step by Step Solution
- Step 1: Write the proportion equation
15,421,177.98 : 21,280,495.56 = 9,229,636.08 : x - Step 2: Convert to fraction form
15,421,177.98/21,280,495.56 = 9,229,636.08/x - Step 3: Cross multiply
15,421,177.98x = 21,280,495.56 × 9,229,636.08 - Step 4: Simplify right side
15,421,177.98x = 196,411,229,620,855.78 - Step 5: Solve for x
x = 196,411,229,620,855.78/15,421,177.98 - Step 6: Final answer
x = 12,736,460.85
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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.