Finding the Fourth Proportional to 15,235,145.08, 21,024,863.52 and 8,709,381.76
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Solution
The fourth proportional to 15,235,145.08, 21,024,863.52 and 8,709,381.76 is: 12,019,154.52
Step by Step Solution
- Step 1: Write the proportion equation
15,235,145.08 : 21,024,863.52 = 8,709,381.76 : x - Step 2: Convert to fraction form
15,235,145.08/21,024,863.52 = 8,709,381.76/x - Step 3: Cross multiply
15,235,145.08x = 21,024,863.52 × 8,709,381.76 - Step 4: Simplify right side
15,235,145.08x = 183,113,562,847,577.38 - Step 5: Solve for x
x = 183,113,562,847,577.38/15,235,145.08 - Step 6: Final answer
x = 12,019,154.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.