Finding the Fourth Proportional to 38,756.99, 53,475.50 and 21,989.99
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Solution
The fourth proportional to 38,756.99, 53,475.50 and 21,989.99 is: 30,341.00
Step by Step Solution
- Step 1: Write the proportion equation
38,756.99 : 53,475.50 = 21,989.99 : x - Step 2: Convert to fraction form
38,756.99/53,475.50 = 21,989.99/x - Step 3: Cross multiply
38,756.99x = 53,475.50 × 21,989.99 - Step 4: Simplify right side
38,756.99x = 1,175,925,497.84 - Step 5: Solve for x
x = 1,175,925,497.84/38,756.99 - Step 6: Final answer
x = 30,341.00
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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.