Finding the Fourth Proportional to 15,643,809.58, 21,588,388.76 and 8,768,291.98
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Solution
The fourth proportional to 15,643,809.58, 21,588,388.76 and 8,768,291.98 is: 12,100,204.56
Step by Step Solution
- Step 1: Write the proportion equation
15,643,809.58 : 21,588,388.76 = 8,768,291.98 : x - Step 2: Convert to fraction form
15,643,809.58/21,588,388.76 = 8,768,291.98/x - Step 3: Cross multiply
15,643,809.58x = 21,588,388.76 × 8,768,291.98 - Step 4: Simplify right side
15,643,809.58x = 189,293,296,025,430.16 - Step 5: Solve for x
x = 189,293,296,025,430.16/15,643,809.58 - Step 6: Final answer
x = 12,100,204.56
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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.