Finding the Fourth Proportional to 19,875,918.56, 27,428,602.74 and 11,174,129.96
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Solution
The fourth proportional to 19,875,918.56, 27,428,602.74 and 11,174,129.96 is: 15,420,206.65
Step by Step Solution
- Step 1: Write the proportion equation
19,875,918.56 : 27,428,602.74 = 11,174,129.96 : x - Step 2: Convert to fraction form
19,875,918.56/27,428,602.74 = 11,174,129.96/x - Step 3: Cross multiply
19,875,918.56x = 27,428,602.74 × 11,174,129.96 - Step 4: Simplify right side
19,875,918.56x = 306,490,771,637,972.12 - Step 5: Solve for x
x = 306,490,771,637,972.12/19,875,918.56 - Step 6: Final answer
x = 15,420,206.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.