Finding the Fourth Proportional to 15,449,430.60, 23,174,145.90 and 8,646,985.80
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Solution
The fourth proportional to 15,449,430.60, 23,174,145.90 and 8,646,985.80 is: 12,970,478.70
Step by Step Solution
- Step 1: Write the proportion equation
15,449,430.60 : 23,174,145.90 = 8,646,985.80 : x - Step 2: Convert to fraction form
15,449,430.60/23,174,145.90 = 8,646,985.80/x - Step 3: Cross multiply
15,449,430.60x = 23,174,145.90 × 8,646,985.80 - Step 4: Simplify right side
15,449,430.60x = 200,386,510,524,428.22 - Step 5: Solve for x
x = 200,386,510,524,428.22/15,449,430.60 - Step 6: Final answer
x = 12,970,478.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.