Finding the Fourth Proportional to 15,117,746.20, 20,861,590.86 and 8,590,469.74
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Solution
The fourth proportional to 15,117,746.20, 20,861,590.86 and 8,590,469.74 is: 11,854,337.45
Step by Step Solution
- Step 1: Write the proportion equation
15,117,746.20 : 20,861,590.86 = 8,590,469.74 : x - Step 2: Convert to fraction form
15,117,746.20/20,861,590.86 = 8,590,469.74/x - Step 3: Cross multiply
15,117,746.20x = 20,861,590.86 × 8,590,469.74 - Step 4: Simplify right side
15,117,746.20x = 179,210,865,011,090.56 - Step 5: Solve for x
x = 179,210,865,011,090.56/15,117,746.20 - Step 6: Final answer
x = 11,854,337.45
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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.