Home / 28,358.01-39,129.57-15,782.76

Finding the Fourth Proportional to 28,358.01, 39,129.57 and 15,782.76

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Solution

The fourth proportional to 28,358.01, 39,129.57 and 15,782.76 is: 21,777.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.01 : 39,129.57 = 15,782.76 : x
  2. Step 2: Convert to fraction form
    28,358.01/39,129.57 = 15,782.76/x
  3. Step 3: Cross multiply
    28,358.01x = 39,129.57 × 15,782.76
  4. Step 4: Simplify right side
    28,358.01x = 617,572,612.21
  5. Step 5: Solve for x
    x = 617,572,612.21/28,358.01
  6. Step 6: Final answer
    x = 21,777.71

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Half scale
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Double scale
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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.