Finding the Fourth Proportional to 18,220,497.66, 25,127,990.44 and 15,118,100.06
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Solution
The fourth proportional to 18,220,497.66, 25,127,990.44 and 15,118,100.06 is: 20,849,456.51
Step by Step Solution
- Step 1: Write the proportion equation
18,220,497.66 : 25,127,990.44 = 15,118,100.06 : x - Step 2: Convert to fraction form
18,220,497.66/25,127,990.44 = 15,118,100.06/x - Step 3: Cross multiply
18,220,497.66x = 25,127,990.44 × 15,118,100.06 - Step 4: Simplify right side
18,220,497.66x = 379,887,473,615,208.19 - Step 5: Solve for x
x = 379,887,473,615,208.19/18,220,497.66 - Step 6: Final answer
x = 20,849,456.51
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1.5x scale
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.