Finding the Fourth Proportional to 20,526,718.28, 28,326,946.26 and 11,107,509.32
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Solution
The fourth proportional to 20,526,718.28, 28,326,946.26 and 11,107,509.32 is: 15,328,403.46
Step by Step Solution
- Step 1: Write the proportion equation
20,526,718.28 : 28,326,946.26 = 11,107,509.32 : x - Step 2: Convert to fraction form
20,526,718.28/28,326,946.26 = 11,107,509.32/x - Step 3: Cross multiply
20,526,718.28x = 28,326,946.26 × 11,107,509.32 - Step 4: Simplify right side
20,526,718.28x = 314,641,819,448,454.44 - Step 5: Solve for x
x = 314,641,819,448,454.44/20,526,718.28 - Step 6: Final answer
x = 15,328,403.46
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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.