Finding the Fourth Proportional to 15,643,807.58, 21,588,386 and 8,768,289.98
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Solution
The fourth proportional to 15,643,807.58, 21,588,386 and 8,768,289.98 is: 12,100,201.80
Step by Step Solution
- Step 1: Write the proportion equation
15,643,807.58 : 21,588,386 = 8,768,289.98 : x - Step 2: Convert to fraction form
15,643,807.58/21,588,386 = 8,768,289.98/x - Step 3: Cross multiply
15,643,807.58x = 21,588,386 × 8,768,289.98 - Step 4: Simplify right side
15,643,807.58x = 189,293,228,648,172.28 - Step 5: Solve for x
x = 189,293,228,648,172.28/15,643,807.58 - Step 6: Final answer
x = 12,100,201.80
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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.