Finding the Fourth Proportional to 19,479,875.80, 29,219,813.70 and 18,920,003.80
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Solution
The fourth proportional to 19,479,875.80, 29,219,813.70 and 18,920,003.80 is: 28,380,005.70
Step by Step Solution
- Step 1: Write the proportion equation
19,479,875.80 : 29,219,813.70 = 18,920,003.80 : x - Step 2: Convert to fraction form
19,479,875.80/29,219,813.70 = 18,920,003.80/x - Step 3: Cross multiply
19,479,875.80x = 29,219,813.70 × 18,920,003.80 - Step 4: Simplify right side
19,479,875.80x = 552,838,986,239,292.06 - Step 5: Solve for x
x = 552,838,986,239,292.06/19,479,875.80 - Step 6: Final answer
x = 28,380,005.70
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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.