Finding the Fourth Proportional to 38,596,313.99, 53,262,913.59 and 21,192,659.21
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Solution
The fourth proportional to 38,596,313.99, 53,262,913.59 and 21,192,659.21 is: 29,245,869.87
Step by Step Solution
- Step 1: Write the proportion equation
38,596,313.99 : 53,262,913.59 = 21,192,659.21 : x - Step 2: Convert to fraction form
38,596,313.99/53,262,913.59 = 21,192,659.21/x - Step 3: Cross multiply
38,596,313.99x = 53,262,913.59 × 21,192,659.21 - Step 4: Simplify right side
38,596,313.99x = 1,128,782,776,377,705 - Step 5: Solve for x
x = 1,128,782,776,377,705/38,596,313.99 - Step 6: Final answer
x = 29,245,869.87
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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.