Finding the Fourth Proportional to 19,916,934.56, 27,487,988.91 and 11,216,807.99
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Solution
The fourth proportional to 19,916,934.56, 27,487,988.91 and 11,216,807.99 is: 15,480,670.11
Step by Step Solution
- Step 1: Write the proportion equation
19,916,934.56 : 27,487,988.91 = 11,216,807.99 : x - Step 2: Convert to fraction form
19,916,934.56/27,487,988.91 = 11,216,807.99/x - Step 3: Cross multiply
19,916,934.56x = 27,487,988.91 × 11,216,807.99 - Step 4: Simplify right side
19,916,934.56x = 308,327,493,497,279.44 - Step 5: Solve for x
x = 308,327,493,497,279.44/19,916,934.56 - Step 6: Final answer
x = 15,480,670.11
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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.