Finding the Fourth Proportional to 19,320,159.42, 26,651,169.99 and 15,692,188.86
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Solution
The fourth proportional to 19,320,159.42, 26,651,169.99 and 15,692,188.86 is: 21,646,570.49
Step by Step Solution
- Step 1: Write the proportion equation
19,320,159.42 : 26,651,169.99 = 15,692,188.86 : x - Step 2: Convert to fraction form
19,320,159.42/26,651,169.99 = 15,692,188.86/x - Step 3: Cross multiply
19,320,159.42x = 26,651,169.99 × 15,692,188.86 - Step 4: Simplify right side
19,320,159.42x = 418,215,192,823,044.25 - Step 5: Solve for x
x = 418,215,192,823,044.25/19,320,159.42 - Step 6: Final answer
x = 21,646,570.49
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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.