Finding the Fourth Proportional to 28,385,661.68, 39,172,228.08 and 15,332,920.28
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Solution
The fourth proportional to 28,385,661.68, 39,172,228.08 and 15,332,920.28 is: 21,159,438.07
Step by Step Solution
- Step 1: Write the proportion equation
28,385,661.68 : 39,172,228.08 = 15,332,920.28 : x - Step 2: Convert to fraction form
28,385,661.68/39,172,228.08 = 15,332,920.28/x - Step 3: Cross multiply
28,385,661.68x = 39,172,228.08 × 15,332,920.28 - Step 4: Simplify right side
28,385,661.68x = 600,624,650,340,617.38 - Step 5: Solve for x
x = 600,624,650,340,617.38/28,385,661.68 - Step 6: Final answer
x = 21,159,438.07
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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.