Finding the Fourth Proportional to 19,888,363.70, 27,919,291.90 and 19,888,363.70
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Solution
The fourth proportional to 19,888,363.70, 27,919,291.90 and 19,888,363.70 is: 27,919,291.90
Step by Step Solution
- Step 1: Write the proportion equation
19,888,363.70 : 27,919,291.90 = 19,888,363.70 : x - Step 2: Convert to fraction form
19,888,363.70/27,919,291.90 = 19,888,363.70/x - Step 3: Cross multiply
19,888,363.70x = 27,919,291.90 × 19,888,363.70 - Step 4: Simplify right side
19,888,363.70x = 555,269,031,553,664 - Step 5: Solve for x
x = 555,269,031,553,664/19,888,363.70 - Step 6: Final answer
x = 27,919,291.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.