Finding the Fourth Proportional to 18,525,292.80, 25,564,903.20 and 11,281,948.80
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Solution
The fourth proportional to 18,525,292.80, 25,564,903.20 and 11,281,948.80 is: 15,569,088.82
Step by Step Solution
- Step 1: Write the proportion equation
18,525,292.80 : 25,564,903.20 = 11,281,948.80 : x - Step 2: Convert to fraction form
18,525,292.80/25,564,903.20 = 11,281,948.80/x - Step 3: Cross multiply
18,525,292.80x = 25,564,903.20 × 11,281,948.80 - Step 4: Simplify right side
18,525,292.80x = 288,421,928,979,356.19 - Step 5: Solve for x
x = 288,421,928,979,356.19/18,525,292.80 - Step 6: Final answer
x = 15,569,088.82
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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.