Finding the Fourth Proportional to 27,918,489.18, 38,526,962.58 and 15,528,316.08
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Solution
The fourth proportional to 27,918,489.18, 38,526,962.58 and 15,528,316.08 is: 21,428,768.90
Step by Step Solution
- Step 1: Write the proportion equation
27,918,489.18 : 38,526,962.58 = 15,528,316.08 : x - Step 2: Convert to fraction form
27,918,489.18/38,526,962.58 = 15,528,316.08/x - Step 3: Cross multiply
27,918,489.18x = 38,526,962.58 × 15,528,316.08 - Step 4: Simplify right side
27,918,489.18x = 598,258,852,544,572.25 - Step 5: Solve for x
x = 598,258,852,544,572.25/27,918,489.18 - Step 6: Final answer
x = 21,428,768.90
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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.