Finding the Fourth Proportional to 27,695,819.69, 38,220,349.74 and 15,137,128.01
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Solution
The fourth proportional to 27,695,819.69, 38,220,349.74 and 15,137,128.01 is: 20,889,301.45
Step by Step Solution
- Step 1: Write the proportion equation
27,695,819.69 : 38,220,349.74 = 15,137,128.01 : x - Step 2: Convert to fraction form
27,695,819.69/38,220,349.74 = 15,137,128.01/x - Step 3: Cross multiply
27,695,819.69x = 38,220,349.74 × 15,137,128.01 - Step 4: Simplify right side
27,695,819.69x = 578,546,326,410,248.50 - Step 5: Solve for x
x = 578,546,326,410,248.50/27,695,819.69 - Step 6: Final answer
x = 20,889,301.45
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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.