Finding the Fourth Proportional to 15,470,529.94, 21,349,686.90 and 8,501,640.76
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Solution
The fourth proportional to 15,470,529.94, 21,349,686.90 and 8,501,640.76 is: 11,732,459.65
Step by Step Solution
- Step 1: Write the proportion equation
15,470,529.94 : 21,349,686.90 = 8,501,640.76 : x - Step 2: Convert to fraction form
15,470,529.94/21,349,686.90 = 8,501,640.76/x - Step 3: Cross multiply
15,470,529.94x = 21,349,686.90 × 8,501,640.76 - Step 4: Simplify right side
15,470,529.94x = 181,507,368,362,278.03 - Step 5: Solve for x
x = 181,507,368,362,278.03/15,470,529.94 - Step 6: Final answer
x = 11,732,459.65
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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.