Finding the Fourth Proportional to 12,931,130.99, 19,374,746.75 and 7,802,785.49
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Solution
The fourth proportional to 12,931,130.99, 19,374,746.75 and 7,802,785.49 is: 11,690,933.52
Step by Step Solution
- Step 1: Write the proportion equation
12,931,130.99 : 19,374,746.75 = 7,802,785.49 : x - Step 2: Convert to fraction form
12,931,130.99/19,374,746.75 = 7,802,785.49/x - Step 3: Cross multiply
12,931,130.99x = 19,374,746.75 × 7,802,785.49 - Step 4: Simplify right side
12,931,130.99x = 151,176,992,750,588.12 - Step 5: Solve for x
x = 151,176,992,750,588.12/12,931,130.99 - Step 6: Final answer
x = 11,690,933.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.