Finding the Fourth Proportional to 20,416,384.99, 28,174,256.50 and 11,124,031.42
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Solution
The fourth proportional to 20,416,384.99, 28,174,256.50 and 11,124,031.42 is: 15,350,970.05
Step by Step Solution
- Step 1: Write the proportion equation
20,416,384.99 : 28,174,256.50 = 11,124,031.42 : x - Step 2: Convert to fraction form
20,416,384.99/28,174,256.50 = 11,124,031.42/x - Step 3: Cross multiply
20,416,384.99x = 28,174,256.50 × 11,124,031.42 - Step 4: Simplify right side
20,416,384.99x = 313,411,314,541,139.25 - Step 5: Solve for x
x = 313,411,314,541,139.25/20,416,384.99 - Step 6: Final answer
x = 15,350,970.05
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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.