Finding the Fourth Proportional to 10,368,021.30, 15,552,031.95 and 7,120,763.70
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Solution
The fourth proportional to 10,368,021.30, 15,552,031.95 and 7,120,763.70 is: 10,681,145.55
Step by Step Solution
- Step 1: Write the proportion equation
10,368,021.30 : 15,552,031.95 = 7,120,763.70 : x - Step 2: Convert to fraction form
10,368,021.30/15,552,031.95 = 7,120,763.70/x - Step 3: Cross multiply
10,368,021.30x = 15,552,031.95 × 7,120,763.70 - Step 4: Simplify right side
10,368,021.30x = 110,742,344,570,800.22 - Step 5: Solve for x
x = 110,742,344,570,800.22/10,368,021.30 - Step 6: Final answer
x = 10,681,145.55
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1.5x scale
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.