Finding the Fourth Proportional to 15,357,680.81, 21,193,459.99 and 8,388,356.91
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Solution
The fourth proportional to 15,357,680.81, 21,193,459.99 and 8,388,356.91 is: 11,575,856.32
Step by Step Solution
- Step 1: Write the proportion equation
15,357,680.81 : 21,193,459.99 = 8,388,356.91 : x - Step 2: Convert to fraction form
15,357,680.81/21,193,459.99 = 8,388,356.91/x - Step 3: Cross multiply
15,357,680.81x = 21,193,459.99 × 8,388,356.91 - Step 4: Simplify right side
15,357,680.81x = 177,778,306,532,954.16 - Step 5: Solve for x
x = 177,778,306,532,954.16/15,357,680.81 - Step 6: Final answer
x = 11,575,856.32
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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.