Finding the Fourth Proportional to 27,918,488.18, 38,526,961.20 and 15,528,315.08
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Solution
The fourth proportional to 27,918,488.18, 38,526,961.20 and 15,528,315.08 is: 21,428,767.51
Step by Step Solution
- Step 1: Write the proportion equation
27,918,488.18 : 38,526,961.20 = 15,528,315.08 : x - Step 2: Convert to fraction form
27,918,488.18/38,526,961.20 = 15,528,315.08/x - Step 3: Cross multiply
27,918,488.18x = 38,526,961.20 × 15,528,315.08 - Step 4: Simplify right side
27,918,488.18x = 598,258,792,395,900.12 - Step 5: Solve for x
x = 598,258,792,395,900.12/27,918,488.18 - Step 6: Final answer
x = 21,428,767.51
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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.