Finding the Fourth Proportional to 13,158,477.99, 18,153,139.23 and 8,808,965.55
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Solution
The fourth proportional to 13,158,477.99, 18,153,139.23 and 8,808,965.55 is: 12,152,650.04
Step by Step Solution
- Step 1: Write the proportion equation
13,158,477.99 : 18,153,139.23 = 8,808,965.55 : x - Step 2: Convert to fraction form
13,158,477.99/18,153,139.23 = 8,808,965.55/x - Step 3: Cross multiply
13,158,477.99x = 18,153,139.23 × 8,808,965.55 - Step 4: Simplify right side
13,158,477.99x = 159,910,378,101,423.53 - Step 5: Solve for x
x = 159,910,378,101,423.53/13,158,477.99 - Step 6: Final answer
x = 12,152,650.04
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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.