Finding the Fourth Proportional to 13,258,214.40, 19,887,321.60 and 11,130,700.80
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Solution
The fourth proportional to 13,258,214.40, 19,887,321.60 and 11,130,700.80 is: 16,696,051.20
Step by Step Solution
- Step 1: Write the proportion equation
13,258,214.40 : 19,887,321.60 = 11,130,700.80 : x - Step 2: Convert to fraction form
13,258,214.40/19,887,321.60 = 11,130,700.80/x - Step 3: Cross multiply
13,258,214.40x = 19,887,321.60 × 11,130,700.80 - Step 4: Simplify right side
13,258,214.40x = 221,359,826,442,977.31 - Step 5: Solve for x
x = 221,359,826,442,977.31/13,258,214.40 - Step 6: Final answer
x = 16,696,051.20
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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.