Finding the Fourth Proportional to 18,128,955.84, 27,220,235.04 and 12,101,242.56
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Solution
The fourth proportional to 18,128,955.84, 27,220,235.04 and 12,101,242.56 is: 18,169,753.94
Step by Step Solution
- Step 1: Write the proportion equation
18,128,955.84 : 27,220,235.04 = 12,101,242.56 : x - Step 2: Convert to fraction form
18,128,955.84/27,220,235.04 = 12,101,242.56/x - Step 3: Cross multiply
18,128,955.84x = 27,220,235.04 × 12,101,242.56 - Step 4: Simplify right side
18,128,955.84x = 329,398,666,759,251.31 - Step 5: Solve for x
x = 329,398,666,759,251.31/18,128,955.84 - Step 6: Final answer
x = 18,169,753.94
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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.