Finding the Fourth Proportional to 19,916,905.06, 27,487,948.20 and 11,216,778.48
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Solution
The fourth proportional to 19,916,905.06, 27,487,948.20 and 11,216,778.48 is: 15,480,629.39
Step by Step Solution
- Step 1: Write the proportion equation
19,916,905.06 : 27,487,948.20 = 11,216,778.48 : x - Step 2: Convert to fraction form
19,916,905.06/27,487,948.20 = 11,216,778.48/x - Step 3: Cross multiply
19,916,905.06x = 27,487,948.20 × 11,216,778.48 - Step 4: Simplify right side
19,916,905.06x = 308,326,225,829,114.75 - Step 5: Solve for x
x = 308,326,225,829,114.75/19,916,905.06 - Step 6: Final answer
x = 15,480,629.39
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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.