Finding the Fourth Proportional to 20,402,898.35, 30,564,489.45 and 12,291,780.09
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Solution
The fourth proportional to 20,402,898.35, 30,564,489.45 and 12,291,780.09 is: 18,413,657.53
Step by Step Solution
- Step 1: Write the proportion equation
20,402,898.35 : 30,564,489.45 = 12,291,780.09 : x - Step 2: Convert to fraction form
20,402,898.35/30,564,489.45 = 12,291,780.09/x - Step 3: Cross multiply
20,402,898.35x = 30,564,489.45 × 12,291,780.09 - Step 4: Simplify right side
20,402,898.35x = 375,691,982,882,525.06 - Step 5: Solve for x
x = 375,691,982,882,525.06/20,402,898.35 - Step 6: Final answer
x = 18,413,657.53
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.