Finding the Fourth Proportional to 21,358,031.74, 29,472,553.66 and 12,537,841.15
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Solution
The fourth proportional to 21,358,031.74, 29,472,553.66 and 12,537,841.15 is: 17,301,322.55
Step by Step Solution
- Step 1: Write the proportion equation
21,358,031.74 : 29,472,553.66 = 12,537,841.15 : x - Step 2: Convert to fraction form
21,358,031.74/29,472,553.66 = 12,537,841.15/x - Step 3: Cross multiply
21,358,031.74x = 29,472,553.66 × 12,537,841.15 - Step 4: Simplify right side
21,358,031.74x = 369,522,196,126,444.06 - Step 5: Solve for x
x = 369,522,196,126,444.06/21,358,031.74 - Step 6: Final answer
x = 17,301,322.55
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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.