Finding the Fourth Proportional to 13,312,964.20, 18,371,963.82 and 7,432,864.24
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Solution
The fourth proportional to 13,312,964.20, 18,371,963.82 and 7,432,864.24 is: 10,257,393.53
Step by Step Solution
- Step 1: Write the proportion equation
13,312,964.20 : 18,371,963.82 = 7,432,864.24 : x - Step 2: Convert to fraction form
13,312,964.20/18,371,963.82 = 7,432,864.24/x - Step 3: Cross multiply
13,312,964.20x = 18,371,963.82 × 7,432,864.24 - Step 4: Simplify right side
13,312,964.20x = 136,556,312,896,251.80 - Step 5: Solve for x
x = 136,556,312,896,251.80/13,312,964.20 - Step 6: Final answer
x = 10,257,393.53
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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.