Home / 28,581.11-39,411.12-19,507.49

Finding the Fourth Proportional to 28,581.11, 39,411.12 and 19,507.49

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Solution

The fourth proportional to 28,581.11, 39,411.12 and 19,507.49 is: 26,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.11 : 39,411.12 = 19,507.49 : x
  2. Step 2: Convert to fraction form
    28,581.11/39,411.12 = 19,507.49/x
  3. Step 3: Cross multiply
    28,581.11x = 39,411.12 × 19,507.49
  4. Step 4: Simplify right side
    28,581.11x = 768,812,029.29
  5. Step 5: Solve for x
    x = 768,812,029.29/28,581.11
  6. Step 6: Final answer
    x = 26,899.31

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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.