Finding the Fourth Proportional to 21,341,948.34, 29,455,878.62 and 12,174,591.09
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Solution
The fourth proportional to 21,341,948.34, 29,455,878.62 and 12,174,591.09 is: 16,803,211.77
Step by Step Solution
- Step 1: Write the proportion equation
21,341,948.34 : 29,455,878.62 = 12,174,591.09 : x - Step 2: Convert to fraction form
21,341,948.34/29,455,878.62 = 12,174,591.09/x - Step 3: Cross multiply
21,341,948.34x = 29,455,878.62 × 12,174,591.09 - Step 4: Simplify right side
21,341,948.34x = 358,613,277,536,069.50 - Step 5: Solve for x
x = 358,613,277,536,069.50/21,341,948.34 - Step 6: Final answer
x = 16,803,211.77
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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.