Finding the Fourth Proportional to 15,106,880,950.64, 20,847,560,525.04 and 8,240,427,215.96
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Solution
The fourth proportional to 15,106,880,950.64, 20,847,560,525.04 and 8,240,427,215.96 is: 11,371,824,911.99
Step by Step Solution
- Step 1: Write the proportion equation
15,106,880,950.64 : 20,847,560,525.04 = 8,240,427,215.96 : x - Step 2: Convert to fraction form
15,106,880,950.64/20,847,560,525.04 = 8,240,427,215.96/x - Step 3: Cross multiply
15,106,880,950.64x = 20,847,560,525.04 × 8,240,427,215.96 - Step 4: Simplify right side
15,106,880,950.64x = 171,792,805,136,912,973,824 - Step 5: Solve for x
x = 171,792,805,136,912,973,824/15,106,880,950.64 - Step 6: Final answer
x = 11,371,824,911.99
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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.