Finding the Fourth Proportional to 15,031,471.60, 22,547,207.40 and 12,879,135.55
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Solution
The fourth proportional to 15,031,471.60, 22,547,207.40 and 12,879,135.55 is: 19,318,703.33
Step by Step Solution
- Step 1: Write the proportion equation
15,031,471.60 : 22,547,207.40 = 12,879,135.55 : x - Step 2: Convert to fraction form
15,031,471.60/22,547,207.40 = 12,879,135.55/x - Step 3: Cross multiply
15,031,471.60x = 22,547,207.40 × 12,879,135.55 - Step 4: Simplify right side
15,031,471.60x = 290,388,540,378,563.06 - Step 5: Solve for x
x = 290,388,540,378,563.06/15,031,471.60 - Step 6: Final answer
x = 19,318,703.33
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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.