Home / 28,006.10-38,640.12-16,666.50

Finding the Fourth Proportional to 28,006.10, 38,640.12 and 16,666.50

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Solution

The fourth proportional to 28,006.10, 38,640.12 and 16,666.50 is: 22,994.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.10 : 38,640.12 = 16,666.50 : x
  2. Step 2: Convert to fraction form
    28,006.10/38,640.12 = 16,666.50/x
  3. Step 3: Cross multiply
    28,006.10x = 38,640.12 × 16,666.50
  4. Step 4: Simplify right side
    28,006.10x = 643,995,559.98
  5. Step 5: Solve for x
    x = 643,995,559.98/28,006.10
  6. Step 6: Final answer
    x = 22,994.84

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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.