Finding the Fourth Proportional to 12,997,780.68, 17,937,497.35 and 7,196,562.10
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Solution
The fourth proportional to 12,997,780.68, 17,937,497.35 and 7,196,562.10 is: 9,931,565.76
Step by Step Solution
- Step 1: Write the proportion equation
12,997,780.68 : 17,937,497.35 = 7,196,562.10 : x - Step 2: Convert to fraction form
12,997,780.68/17,937,497.35 = 7,196,562.10/x - Step 3: Cross multiply
12,997,780.68x = 17,937,497.35 × 7,196,562.10 - Step 4: Simplify right side
12,997,780.68x = 129,088,313,597,860.44 - Step 5: Solve for x
x = 129,088,313,597,860.44/12,997,780.68 - Step 6: Final answer
x = 9,931,565.76
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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.