Finding the Fourth Proportional to 28,775,677.08, 39,709,252.70 and 15,723,384.06
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Solution
The fourth proportional to 28,775,677.08, 39,709,252.70 and 15,723,384.06 is: 21,697,624.32
Step by Step Solution
- Step 1: Write the proportion equation
28,775,677.08 : 39,709,252.70 = 15,723,384.06 : x - Step 2: Convert to fraction form
28,775,677.08/39,709,252.70 = 15,723,384.06/x - Step 3: Cross multiply
28,775,677.08x = 39,709,252.70 × 15,723,384.06 - Step 4: Simplify right side
28,775,677.08x = 624,363,830,937,692 - Step 5: Solve for x
x = 624,363,830,937,692/28,775,677.08 - Step 6: Final answer
x = 21,697,624.32
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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.