Finding the Fourth Proportional to 28,684,459.40, 39,583,402.18 and 15,631,440.12
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Solution
The fourth proportional to 28,684,459.40, 39,583,402.18 and 15,631,440.12 is: 21,570,759.70
Step by Step Solution
- Step 1: Write the proportion equation
28,684,459.40 : 39,583,402.18 = 15,631,440.12 : x - Step 2: Convert to fraction form
28,684,459.40/39,583,402.18 = 15,631,440.12/x - Step 3: Cross multiply
28,684,459.40x = 39,583,402.18 × 15,631,440.12 - Step 4: Simplify right side
28,684,459.40x = 618,745,580,922,547.38 - Step 5: Solve for x
x = 618,745,580,922,547.38/28,684,459.40 - Step 6: Final answer
x = 21,570,759.70
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1.5x scale
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.