Finding the Fourth Proportional to 13,565,615.49, 18,720,545.08 and 7,454,437.65
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Solution
The fourth proportional to 13,565,615.49, 18,720,545.08 and 7,454,437.65 is: 10,287,121.60
Step by Step Solution
- Step 1: Write the proportion equation
13,565,615.49 : 18,720,545.08 = 7,454,437.65 : x - Step 2: Convert to fraction form
13,565,615.49/18,720,545.08 = 7,454,437.65/x - Step 3: Cross multiply
13,565,615.49x = 18,720,545.08 × 7,454,437.65 - Step 4: Simplify right side
13,565,615.49x = 139,551,136,072,874.25 - Step 5: Solve for x
x = 139,551,136,072,874.25/13,565,615.49 - Step 6: Final answer
x = 10,287,121.60
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1.5x scale
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.