Finding the Fourth Proportional to 15,789,048.32, 21,786,567.67 and 8,818,866.99
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Solution
The fourth proportional to 15,789,048.32, 21,786,567.67 and 8,818,866.99 is: 12,168,741.18
Step by Step Solution
- Step 1: Write the proportion equation
15,789,048.32 : 21,786,567.67 = 8,818,866.99 : x - Step 2: Convert to fraction form
15,789,048.32/21,786,567.67 = 8,818,866.99/x - Step 3: Cross multiply
15,789,048.32x = 21,786,567.67 × 8,818,866.99 - Step 4: Simplify right side
15,789,048.32x = 192,132,842,428,317.06 - Step 5: Solve for x
x = 192,132,842,428,317.06/15,789,048.32 - Step 6: Final answer
x = 12,168,741.18
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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.