Finding the Fourth Proportional to 18,687,637.80, 28,031,456.70 and 18,687,637.80
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Solution
The fourth proportional to 18,687,637.80, 28,031,456.70 and 18,687,637.80 is: 28,031,456.70
Step by Step Solution
- Step 1: Write the proportion equation
18,687,637.80 : 28,031,456.70 = 18,687,637.80 : x - Step 2: Convert to fraction form
18,687,637.80/28,031,456.70 = 18,687,637.80/x - Step 3: Cross multiply
18,687,637.80x = 28,031,456.70 × 18,687,637.80 - Step 4: Simplify right side
18,687,637.80x = 523,841,709,815,983.25 - Step 5: Solve for x
x = 523,841,709,815,983.25/18,687,637.80 - Step 6: Final answer
x = 28,031,456.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.