Finding the Fourth Proportional to 19,700,449.80, 29,550,674.70 and 18,584,423.70
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Solution
The fourth proportional to 19,700,449.80, 29,550,674.70 and 18,584,423.70 is: 27,876,635.55
Step by Step Solution
- Step 1: Write the proportion equation
19,700,449.80 : 29,550,674.70 = 18,584,423.70 : x - Step 2: Convert to fraction form
19,700,449.80/29,550,674.70 = 18,584,423.70/x - Step 3: Cross multiply
19,700,449.80x = 29,550,674.70 × 18,584,423.70 - Step 4: Simplify right side
19,700,449.80x = 549,182,259,245,670.38 - Step 5: Solve for x
x = 549,182,259,245,670.38/19,700,449.80 - Step 6: Final answer
x = 27,876,635.55
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Double scale
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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.