Home / 39,756.99-54,864.78-21,853.83

Finding the Fourth Proportional to 39,756.99, 54,864.78 and 21,853.83

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Solution

The fourth proportional to 39,756.99, 54,864.78 and 21,853.83 is: 30,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.99 : 54,864.78 = 21,853.83 : x
  2. Step 2: Convert to fraction form
    39,756.99/54,864.78 = 21,853.83/x
  3. Step 3: Cross multiply
    39,756.99x = 54,864.78 × 21,853.83
  4. Step 4: Simplify right side
    39,756.99x = 1,199,005,575.11
  5. Step 5: Solve for x
    x = 1,199,005,575.11/39,756.99
  6. Step 6: Final answer
    x = 30,158.36

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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.