Finding the Fourth Proportional to 27,783,108.84, 38,340,690.20 and 15,559,965.84
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Solution
The fourth proportional to 27,783,108.84, 38,340,690.20 and 15,559,965.84 is: 21,472,752.86
Step by Step Solution
- Step 1: Write the proportion equation
27,783,108.84 : 38,340,690.20 = 15,559,965.84 : x - Step 2: Convert to fraction form
27,783,108.84/38,340,690.20 = 15,559,965.84/x - Step 3: Cross multiply
27,783,108.84x = 38,340,690.20 × 15,559,965.84 - Step 4: Simplify right side
27,783,108.84x = 596,579,830,005,875.25 - Step 5: Solve for x
x = 596,579,830,005,875.25/27,783,108.84 - Step 6: Final answer
x = 21,472,752.86
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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.