Finding the Fourth Proportional to 28,817,547.40, 39,768,529.11 and 15,764,525.98
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Solution
The fourth proportional to 28,817,547.40, 39,768,529.11 and 15,764,525.98 is: 21,755,217.46
Step by Step Solution
- Step 1: Write the proportion equation
28,817,547.40 : 39,768,529.11 = 15,764,525.98 : x - Step 2: Convert to fraction form
28,817,547.40/39,768,529.11 = 15,764,525.98/x - Step 3: Cross multiply
28,817,547.40x = 39,768,529.11 × 15,764,525.98 - Step 4: Simplify right side
28,817,547.40x = 626,932,010,340,981.25 - Step 5: Solve for x
x = 626,932,010,340,981.25/28,817,547.40 - Step 6: Final answer
x = 21,755,217.46
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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.