Finding the Fourth Proportional to 12,979,340.08, 17,913,885.44 and 8,338,925.99
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Solution
The fourth proportional to 12,979,340.08, 17,913,885.44 and 8,338,925.99 is: 11,509,257.33
Step by Step Solution
- Step 1: Write the proportion equation
12,979,340.08 : 17,913,885.44 = 8,338,925.99 : x - Step 2: Convert to fraction form
12,979,340.08/17,913,885.44 = 8,338,925.99/x - Step 3: Cross multiply
12,979,340.08x = 17,913,885.44 × 8,338,925.99 - Step 4: Simplify right side
12,979,340.08x = 149,382,564,877,498.59 - Step 5: Solve for x
x = 149,382,564,877,498.59/12,979,340.08 - Step 6: Final answer
x = 11,509,257.33
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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.