Finding the Fourth Proportional to 15,389,188.42, 21,237,705.21 and 8,513,552.02
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Solution
The fourth proportional to 15,389,188.42, 21,237,705.21 and 8,513,552.02 is: 11,749,047.65
Step by Step Solution
- Step 1: Write the proportion equation
15,389,188.42 : 21,237,705.21 = 8,513,552.02 : x - Step 2: Convert to fraction form
15,389,188.42/21,237,705.21 = 8,513,552.02/x - Step 3: Cross multiply
15,389,188.42x = 21,237,705.21 × 8,513,552.02 - Step 4: Simplify right side
15,389,188.42x = 180,808,308,090,760.03 - Step 5: Solve for x
x = 180,808,308,090,760.03/15,389,188.42 - Step 6: Final answer
x = 11,749,047.65
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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.