Finding the Fourth Proportional to 19,664,448.16, 27,121,555.20 and 12,791,125.12
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Solution
The fourth proportional to 19,664,448.16, 27,121,555.20 and 12,791,125.12 is: 17,641,746.32
Step by Step Solution
- Step 1: Write the proportion equation
19,664,448.16 : 27,121,555.20 = 12,791,125.12 : x - Step 2: Convert to fraction form
19,664,448.16/27,121,555.20 = 12,791,125.12/x - Step 3: Cross multiply
19,664,448.16x = 27,121,555.20 × 12,791,125.12 - Step 4: Simplify right side
19,664,448.16x = 346,915,206,012,186.56 - Step 5: Solve for x
x = 346,915,206,012,186.56/19,664,448.16 - Step 6: Final answer
x = 17,641,746.32
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1.5x scale
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.