Finding the Fourth Proportional to 20,955,041.80, 31,432,562.70 and 18,435,617.80
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Solution
The fourth proportional to 20,955,041.80, 31,432,562.70 and 18,435,617.80 is: 27,653,426.70
Step by Step Solution
- Step 1: Write the proportion equation
20,955,041.80 : 31,432,562.70 = 18,435,617.80 : x - Step 2: Convert to fraction form
20,955,041.80/31,432,562.70 = 18,435,617.80/x - Step 3: Cross multiply
20,955,041.80x = 31,432,562.70 × 18,435,617.80 - Step 4: Simplify right side
20,955,041.80x = 579,478,712,411,736.12 - Step 5: Solve for x
x = 579,478,712,411,736.12/20,955,041.80 - Step 6: Final answer
x = 27,653,426.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.