Finding the Fourth Proportional to 19,688,971.31, 27,170,781.12 and 10,868,424.88
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Solution
The fourth proportional to 19,688,971.31, 27,170,781.12 and 10,868,424.88 is: 14,998,426.73
Step by Step Solution
- Step 1: Write the proportion equation
19,688,971.31 : 27,170,781.12 = 10,868,424.88 : x - Step 2: Convert to fraction form
19,688,971.31/27,170,781.12 = 10,868,424.88/x - Step 3: Cross multiply
19,688,971.31x = 27,170,781.12 × 10,868,424.88 - Step 4: Simplify right side
19,688,971.31x = 295,303,593,533,642.31 - Step 5: Solve for x
x = 295,303,593,533,642.31/19,688,971.31 - Step 6: Final answer
x = 14,998,426.73
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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.