Finding the Fourth Proportional to 21,540,385.60, 32,271,256.80 and 13,125,563.20
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Solution
The fourth proportional to 21,540,385.60, 32,271,256.80 and 13,125,563.20 is: 19,664,384.31
Step by Step Solution
- Step 1: Write the proportion equation
21,540,385.60 : 32,271,256.80 = 13,125,563.20 : x - Step 2: Convert to fraction form
21,540,385.60/32,271,256.80 = 13,125,563.20/x - Step 3: Cross multiply
21,540,385.60x = 32,271,256.80 × 13,125,563.20 - Step 4: Simplify right side
21,540,385.60x = 423,578,420,671,829.75 - Step 5: Solve for x
x = 423,578,420,671,829.75/21,540,385.60 - Step 6: Final answer
x = 19,664,384.31
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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.