Finding the Fourth Proportional to 21,332,120,465.76, 29,448,534,276.80 and 14,207,390,947.68
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Solution
The fourth proportional to 21,332,120,465.76, 29,448,534,276.80 and 14,207,390,947.68 is: 19,612,998,153.57
Step by Step Solution
- Step 1: Write the proportion equation
21,332,120,465.76 : 29,448,534,276.80 = 14,207,390,947.68 : x - Step 2: Convert to fraction form
21,332,120,465.76/29,448,534,276.80 = 14,207,390,947.68/x - Step 3: Cross multiply
21,332,120,465.76x = 29,448,534,276.80 × 14,207,390,947.68 - Step 4: Simplify right side
21,332,120,465.76x = 418,386,839,306,652,483,584 - Step 5: Solve for x
x = 418,386,839,306,652,483,584/21,332,120,465.76 - Step 6: Final answer
x = 19,612,998,153.57
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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.