Finding the Fourth Proportional to 18,756,427.20, 28,134,640.80 and 5,977,867.20
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Solution
The fourth proportional to 18,756,427.20, 28,134,640.80 and 5,977,867.20 is: 8,966,800.80
Step by Step Solution
- Step 1: Write the proportion equation
18,756,427.20 : 28,134,640.80 = 5,977,867.20 : x - Step 2: Convert to fraction form
18,756,427.20/28,134,640.80 = 5,977,867.20/x - Step 3: Cross multiply
18,756,427.20x = 28,134,640.80 × 5,977,867.20 - Step 4: Simplify right side
18,756,427.20x = 168,185,146,422,101.78 - Step 5: Solve for x
x = 168,185,146,422,101.78/18,756,427.20 - Step 6: Final answer
x = 8,966,800.80
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1.5x scale
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.