Finding the Fourth Proportional to 13,286,270.16, 18,335,441.42 and 7,779,129.76
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Solution
The fourth proportional to 13,286,270.16, 18,335,441.42 and 7,779,129.76 is: 10,735,426.59
Step by Step Solution
- Step 1: Write the proportion equation
13,286,270.16 : 18,335,441.42 = 7,779,129.76 : x - Step 2: Convert to fraction form
13,286,270.16/18,335,441.42 = 7,779,129.76/x - Step 3: Cross multiply
13,286,270.16x = 18,335,441.42 × 7,779,129.76 - Step 4: Simplify right side
13,286,270.16x = 142,633,778,013,058.66 - Step 5: Solve for x
x = 142,633,778,013,058.66/13,286,270.16 - Step 6: Final answer
x = 10,735,426.59
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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.