Finding the Fourth Proportional to 21,506,148.56, 29,658,549.64 and 15,695,726.80
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Solution
The fourth proportional to 21,506,148.56, 29,658,549.64 and 15,695,726.80 is: 21,645,553.65
Step by Step Solution
- Step 1: Write the proportion equation
21,506,148.56 : 29,658,549.64 = 15,695,726.80 : x - Step 2: Convert to fraction form
21,506,148.56/29,658,549.64 = 15,695,726.80/x - Step 3: Cross multiply
21,506,148.56x = 29,658,549.64 × 15,695,726.80 - Step 4: Simplify right side
21,506,148.56x = 465,512,492,433,678.38 - Step 5: Solve for x
x = 465,512,492,433,678.38/21,506,148.56 - Step 6: Final answer
x = 21,645,553.65
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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.