Finding the Fourth Proportional to 20,513,575.62, 28,306,831.86 and 11,346,021.54
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Solution
The fourth proportional to 20,513,575.62, 28,306,831.86 and 11,346,021.54 is: 15,656,457.46
Step by Step Solution
- Step 1: Write the proportion equation
20,513,575.62 : 28,306,831.86 = 11,346,021.54 : x - Step 2: Convert to fraction form
20,513,575.62/28,306,831.86 = 11,346,021.54/x - Step 3: Cross multiply
20,513,575.62x = 28,306,831.86 × 11,346,021.54 - Step 4: Simplify right side
20,513,575.62x = 321,169,924,012,718.25 - Step 5: Solve for x
x = 321,169,924,012,718.25/20,513,575.62 - Step 6: Final answer
x = 15,656,457.46
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.