Finding the Fourth Proportional to 27,702,207.30, 38,228,378.72 and 15,142,703.70
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Solution
The fourth proportional to 27,702,207.30, 38,228,378.72 and 15,142,703.70 is: 20,896,566.31
Step by Step Solution
- Step 1: Write the proportion equation
27,702,207.30 : 38,228,378.72 = 15,142,703.70 : x - Step 2: Convert to fraction form
27,702,207.30/38,228,378.72 = 15,142,703.70/x - Step 3: Cross multiply
27,702,207.30x = 38,228,378.72 × 15,142,703.70 - Step 4: Simplify right side
27,702,207.30x = 578,881,011,888,345.25 - Step 5: Solve for x
x = 578,881,011,888,345.25/27,702,207.30 - Step 6: Final answer
x = 20,896,566.31
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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.