Finding the Fourth Proportional to 28,547,956.31, 39,396,219.48 and 15,495,217.99
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Solution
The fourth proportional to 28,547,956.31, 39,396,219.48 and 15,495,217.99 is: 21,383,422.41
Step by Step Solution
- Step 1: Write the proportion equation
28,547,956.31 : 39,396,219.48 = 15,495,217.99 : x - Step 2: Convert to fraction form
28,547,956.31/39,396,219.48 = 15,495,217.99/x - Step 3: Cross multiply
28,547,956.31x = 39,396,219.48 × 15,495,217.99 - Step 4: Simplify right side
28,547,956.31x = 610,453,008,725,993.88 - Step 5: Solve for x
x = 610,453,008,725,993.88/28,547,956.31 - Step 6: Final answer
x = 21,383,422.41
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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.