Finding the Fourth Proportional to 28,085,495.28, 38,757,974.04 and 15,208,439.28
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Solution
The fourth proportional to 28,085,495.28, 38,757,974.04 and 15,208,439.28 is: 20,987,641.09
Step by Step Solution
- Step 1: Write the proportion equation
28,085,495.28 : 38,757,974.04 = 15,208,439.28 : x - Step 2: Convert to fraction form
28,085,495.28/38,757,974.04 = 15,208,439.28/x - Step 3: Cross multiply
28,085,495.28x = 38,757,974.04 × 15,208,439.28 - Step 4: Simplify right side
28,085,495.28x = 589,448,294,803,156.25 - Step 5: Solve for x
x = 589,448,294,803,156.25/28,085,495.28 - Step 6: Final answer
x = 20,987,641.09
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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.