Finding the Fourth Proportional to 15,781,209.68, 21,776,829 and 9,668,807.12
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Solution
The fourth proportional to 15,781,209.68, 21,776,829 and 9,668,807.12 is: 13,342,193.88
Step by Step Solution
- Step 1: Write the proportion equation
15,781,209.68 : 21,776,829 = 9,668,807.12 : x - Step 2: Convert to fraction form
15,781,209.68/21,776,829 = 9,668,807.12/x - Step 3: Cross multiply
15,781,209.68x = 21,776,829 × 9,668,807.12 - Step 4: Simplify right side
15,781,209.68x = 210,555,959,286,222.47 - Step 5: Solve for x
x = 210,555,959,286,222.47/15,781,209.68 - Step 6: Final answer
x = 13,342,193.88
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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.