Finding the Fourth Proportional to 18,603,964.80, 27,905,947.20 and 13,565,116.80
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Solution
The fourth proportional to 18,603,964.80, 27,905,947.20 and 13,565,116.80 is: 20,347,675.20
Step by Step Solution
- Step 1: Write the proportion equation
18,603,964.80 : 27,905,947.20 = 13,565,116.80 : x - Step 2: Convert to fraction form
18,603,964.80/27,905,947.20 = 13,565,116.80/x - Step 3: Cross multiply
18,603,964.80x = 27,905,947.20 × 13,565,116.80 - Step 4: Simplify right side
18,603,964.80x = 378,547,433,182,633 - Step 5: Solve for x
x = 378,547,433,182,633/18,603,964.80 - Step 6: Final answer
x = 20,347,675.20
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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.