Finding the Fourth Proportional to 19,708,892.96, 29,381,158.74 and 19,398,295.20
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Solution
The fourth proportional to 19,708,892.96, 29,381,158.74 and 19,398,295.20 is: 28,918,133.13
Step by Step Solution
- Step 1: Write the proportion equation
19,708,892.96 : 29,381,158.74 = 19,398,295.20 : x - Step 2: Convert to fraction form
19,708,892.96/29,381,158.74 = 19,398,295.20/x - Step 3: Cross multiply
19,708,892.96x = 29,381,158.74 × 19,398,295.20 - Step 4: Simplify right side
19,708,892.96x = 569,944,390,556,580 - Step 5: Solve for x
x = 569,944,390,556,580/19,708,892.96 - Step 6: Final answer
x = 28,918,133.13
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.