Finding the Fourth Proportional to 28,759,289.76, 39,687,618.06 and 15,706,552.32
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Solution
The fourth proportional to 28,759,289.76, 39,687,618.06 and 15,706,552.32 is: 21,674,931.99
Step by Step Solution
- Step 1: Write the proportion equation
28,759,289.76 : 39,687,618.06 = 15,706,552.32 : x - Step 2: Convert to fraction form
28,759,289.76/39,687,618.06 = 15,706,552.32/x - Step 3: Cross multiply
28,759,289.76x = 39,687,618.06 × 15,706,552.32 - Step 4: Simplify right side
28,759,289.76x = 623,355,649,515,567 - Step 5: Solve for x
x = 623,355,649,515,567/28,759,289.76 - Step 6: Final answer
x = 21,674,931.99
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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.