Finding the Fourth Proportional to 13,361,012.80, 18,438,411.99 and 7,249,441.30
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Solution
The fourth proportional to 13,361,012.80, 18,438,411.99 and 7,249,441.30 is: 10,004,345.28
Step by Step Solution
- Step 1: Write the proportion equation
13,361,012.80 : 18,438,411.99 = 7,249,441.30 : x - Step 2: Convert to fraction form
13,361,012.80/18,438,411.99 = 7,249,441.30/x - Step 3: Cross multiply
13,361,012.80x = 18,438,411.99 × 7,249,441.30 - Step 4: Simplify right side
13,361,012.80x = 133,668,185,386,721.17 - Step 5: Solve for x
x = 133,668,185,386,721.17/13,361,012.80 - Step 6: Final answer
x = 10,004,345.28
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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.