Finding the Fourth Proportional to 20,120,378,412.58, 27,765,313,814.87 and 10,964,712,831.09
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Solution
The fourth proportional to 20,120,378,412.58, 27,765,313,814.87 and 10,964,712,831.09 is: 15,130,863,167.80
Step by Step Solution
- Step 1: Write the proportion equation
20,120,378,412.58 : 27,765,313,814.87 = 10,964,712,831.09 : x - Step 2: Convert to fraction form
20,120,378,412.58/27,765,313,814.87 = 10,964,712,831.09/x - Step 3: Cross multiply
20,120,378,412.58x = 27,765,313,814.87 × 10,964,712,831.09 - Step 4: Simplify right side
20,120,378,412.58x = 304,438,692,645,006,671,872 - Step 5: Solve for x
x = 304,438,692,645,006,671,872/20,120,378,412.58 - Step 6: Final answer
x = 15,130,863,167.80
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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.