Finding the Fourth Proportional to 27,709,962.12, 38,239,651.98 and 15,486,819.12
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Solution
The fourth proportional to 27,709,962.12, 38,239,651.98 and 15,486,819.12 is: 21,371,756.87
Step by Step Solution
- Step 1: Write the proportion equation
27,709,962.12 : 38,239,651.98 = 15,486,819.12 : x - Step 2: Convert to fraction form
27,709,962.12/38,239,651.98 = 15,486,819.12/x - Step 3: Cross multiply
27,709,962.12x = 38,239,651.98 × 15,486,819.12 - Step 4: Simplify right side
27,709,962.12x = 592,210,573,426,009.75 - Step 5: Solve for x
x = 592,210,573,426,009.75/27,709,962.12 - Step 6: Final answer
x = 21,371,756.87
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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.