Finding the Fourth Proportional to 20,781,009.70, 31,172,227.35 and 6,403,963.30
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Solution
The fourth proportional to 20,781,009.70, 31,172,227.35 and 6,403,963.30 is: 9,606,164.61
Step by Step Solution
- Step 1: Write the proportion equation
20,781,009.70 : 31,172,227.35 = 6,403,963.30 : x - Step 2: Convert to fraction form
20,781,009.70/31,172,227.35 = 6,403,963.30/x - Step 3: Cross multiply
20,781,009.70x = 31,172,227.35 × 6,403,963.30 - Step 4: Simplify right side
20,781,009.70x = 199,625,799,928,656.25 - Step 5: Solve for x
x = 199,625,799,928,656.25/20,781,009.70 - Step 6: Final answer
x = 9,606,164.61
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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.