Finding the Fourth Proportional to 19,894,886.40, 29,820,211.20 and 8,533,401.60
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Solution
The fourth proportional to 19,894,886.40, 29,820,211.20 and 8,533,401.60 is: 12,790,615.28
Step by Step Solution
- Step 1: Write the proportion equation
19,894,886.40 : 29,820,211.20 = 8,533,401.60 : x - Step 2: Convert to fraction form
19,894,886.40/29,820,211.20 = 8,533,401.60/x - Step 3: Cross multiply
19,894,886.40x = 29,820,211.20 × 8,533,401.60 - Step 4: Simplify right side
19,894,886.40x = 254,467,837,966,417.91 - Step 5: Solve for x
x = 254,467,837,966,417.91/19,894,886.40 - Step 6: Final answer
x = 12,790,615.28
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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.