Finding the Fourth Proportional to 18,381,807.90, 25,350,381.27 and 11,506,916.70
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Solution
The fourth proportional to 18,381,807.90, 25,350,381.27 and 11,506,916.70 is: 15,869,207.60
Step by Step Solution
- Step 1: Write the proportion equation
18,381,807.90 : 25,350,381.27 = 11,506,916.70 : x - Step 2: Convert to fraction form
18,381,807.90/25,350,381.27 = 11,506,916.70/x - Step 3: Cross multiply
18,381,807.90x = 25,350,381.27 × 11,506,916.70 - Step 4: Simplify right side
18,381,807.90x = 291,704,725,587,130.19 - Step 5: Solve for x
x = 291,704,725,587,130.19/18,381,807.90 - Step 6: Final answer
x = 15,869,207.60
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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.