Finding the Fourth Proportional to 20,232,543.70, 30,348,815.55 and 18,106,779.70
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Solution
The fourth proportional to 20,232,543.70, 30,348,815.55 and 18,106,779.70 is: 27,160,169.55
Step by Step Solution
- Step 1: Write the proportion equation
20,232,543.70 : 30,348,815.55 = 18,106,779.70 : x - Step 2: Convert to fraction form
20,232,543.70/30,348,815.55 = 18,106,779.70/x - Step 3: Cross multiply
20,232,543.70x = 30,348,815.55 × 18,106,779.70 - Step 4: Simplify right side
20,232,543.70x = 549,519,317,319,784.31 - Step 5: Solve for x
x = 549,519,317,319,784.31/20,232,543.70 - Step 6: Final answer
x = 27,160,169.55
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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.