Finding the Fourth Proportional to 21,525,139.71, 29,697,240.79 and 13,794,444.63
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Solution
The fourth proportional to 21,525,139.71, 29,697,240.79 and 13,794,444.63 is: 19,031,557.95
Step by Step Solution
- Step 1: Write the proportion equation
21,525,139.71 : 29,697,240.79 = 13,794,444.63 : x - Step 2: Convert to fraction form
21,525,139.71/29,697,240.79 = 13,794,444.63/x - Step 3: Cross multiply
21,525,139.71x = 29,697,240.79 × 13,794,444.63 - Step 4: Simplify right side
21,525,139.71x = 409,656,943,741,432.50 - Step 5: Solve for x
x = 409,656,943,741,432.50/21,525,139.71 - Step 6: Final answer
x = 19,031,557.95
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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.