Finding the Fourth Proportional to 28,778,671.98, 39,714,670.44 and 15,725,930.76
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Solution
The fourth proportional to 28,778,671.98, 39,714,670.44 and 15,725,930.76 is: 21,701,840.79
Step by Step Solution
- Step 1: Write the proportion equation
28,778,671.98 : 39,714,670.44 = 15,725,930.76 : x - Step 2: Convert to fraction form
28,778,671.98/39,714,670.44 = 15,725,930.76/x - Step 3: Cross multiply
28,778,671.98x = 39,714,670.44 × 15,725,930.76 - Step 4: Simplify right side
28,778,671.98x = 624,550,157,495,658.75 - Step 5: Solve for x
x = 624,550,157,495,658.75/28,778,671.98 - Step 6: Final answer
x = 21,701,840.79
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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.