Finding the Fourth Proportional to 21,513,904.65, 29,688,323.99 and 11,724,138.81
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Solution
The fourth proportional to 21,513,904.65, 29,688,323.99 and 11,724,138.81 is: 16,178,840.48
Step by Step Solution
- Step 1: Write the proportion equation
21,513,904.65 : 29,688,323.99 = 11,724,138.81 : x - Step 2: Convert to fraction form
21,513,904.65/29,688,323.99 = 11,724,138.81/x - Step 3: Cross multiply
21,513,904.65x = 29,688,323.99 × 11,724,138.81 - Step 4: Simplify right side
21,513,904.65x = 348,070,031,436,392.38 - Step 5: Solve for x
x = 348,070,031,436,392.38/21,513,904.65 - Step 6: Final answer
x = 16,178,840.48
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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.