Finding the Fourth Proportional to 18,871,545.80, 28,265,328.30 and 15,512,313.80
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Solution
The fourth proportional to 18,871,545.80, 28,265,328.30 and 15,512,313.80 is: 23,233,954.81
Step by Step Solution
- Step 1: Write the proportion equation
18,871,545.80 : 28,265,328.30 = 15,512,313.80 : x - Step 2: Convert to fraction form
18,871,545.80/28,265,328.30 = 15,512,313.80/x - Step 3: Cross multiply
18,871,545.80x = 28,265,328.30 × 15,512,313.80 - Step 4: Simplify right side
18,871,545.80x = 438,460,642,249,620.56 - Step 5: Solve for x
x = 438,460,642,249,620.56/18,871,545.80 - Step 6: Final answer
x = 23,233,954.81
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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.