Finding the Fourth Proportional to 19,927,339.40, 29,896,257.90 and 7,146,511.40
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Solution
The fourth proportional to 19,927,339.40, 29,896,257.90 and 7,146,511.40 is: 10,721,649.47
Step by Step Solution
- Step 1: Write the proportion equation
19,927,339.40 : 29,896,257.90 = 7,146,511.40 : x - Step 2: Convert to fraction form
19,927,339.40/29,896,257.90 = 7,146,511.40/x - Step 3: Cross multiply
19,927,339.40x = 29,896,257.90 × 7,146,511.40 - Step 4: Simplify right side
19,927,339.40x = 213,653,947,899,690.06 - Step 5: Solve for x
x = 213,653,947,899,690.06/19,927,339.40 - Step 6: Final answer
x = 10,721,649.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.