Finding the Fourth Proportional to 21,135,511.99, 31,693,275.55 and 8,187,726.79
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Solution
The fourth proportional to 21,135,511.99, 31,693,275.55 and 8,187,726.79 is: 12,277,719.20
Step by Step Solution
- Step 1: Write the proportion equation
21,135,511.99 : 31,693,275.55 = 8,187,726.79 : x - Step 2: Convert to fraction form
21,135,511.99/31,693,275.55 = 8,187,726.79/x - Step 3: Cross multiply
21,135,511.99x = 31,693,275.55 × 8,187,726.79 - Step 4: Simplify right side
21,135,511.99x = 259,495,881,283,587 - Step 5: Solve for x
x = 259,495,881,283,587/21,135,511.99 - Step 6: Final answer
x = 12,277,719.20
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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.