Finding the Fourth Proportional to 18,742,772.39, 28,117,993.05 and 6,445,138.55
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Solution
The fourth proportional to 18,742,772.39, 28,117,993.05 and 6,445,138.55 is: 9,669,026.39
Step by Step Solution
- Step 1: Write the proportion equation
18,742,772.39 : 28,117,993.05 = 6,445,138.55 : x - Step 2: Convert to fraction form
18,742,772.39/28,117,993.05 = 6,445,138.55/x - Step 3: Cross multiply
18,742,772.39x = 28,117,993.05 × 6,445,138.55 - Step 4: Simplify right side
18,742,772.39x = 181,224,360,814,597.12 - Step 5: Solve for x
x = 181,224,360,814,597.12/18,742,772.39 - Step 6: Final answer
x = 9,669,026.39
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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.