Finding the Fourth Proportional to 15,438,235.74, 21,307,315.59 and 8,564,932.14
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Solution
The fourth proportional to 15,438,235.74, 21,307,315.59 and 8,564,932.14 is: 11,821,021.21
Step by Step Solution
- Step 1: Write the proportion equation
15,438,235.74 : 21,307,315.59 = 8,564,932.14 : x - Step 2: Convert to fraction form
15,438,235.74/21,307,315.59 = 8,564,932.14/x - Step 3: Cross multiply
15,438,235.74x = 21,307,315.59 × 8,564,932.14 - Step 4: Simplify right side
15,438,235.74x = 182,495,712,113,914.06 - Step 5: Solve for x
x = 182,495,712,113,914.06/15,438,235.74 - Step 6: Final answer
x = 11,821,021.21
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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.