Finding the Fourth Proportional to 28,545,572.90, 39,392,929.58 and 15,492,831.99
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Solution
The fourth proportional to 28,545,572.90, 39,392,929.58 and 15,492,831.99 is: 21,380,129.30
Step by Step Solution
- Step 1: Write the proportion equation
28,545,572.90 : 39,392,929.58 = 15,492,831.99 : x - Step 2: Convert to fraction form
28,545,572.90/39,392,929.58 = 15,492,831.99/x - Step 3: Cross multiply
28,545,572.90x = 39,392,929.58 × 15,492,831.99 - Step 4: Simplify right side
28,545,572.90x = 610,308,039,499,377.12 - Step 5: Solve for x
x = 610,308,039,499,377.12/28,545,572.90 - Step 6: Final answer
x = 21,380,129.30
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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.