Home / 28,535.10-39,296.79-20,564.70

Finding the Fourth Proportional to 28,535.10, 39,296.79 and 20,564.70

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Solution

The fourth proportional to 28,535.10, 39,296.79 and 20,564.70 is: 28,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.10 : 39,296.79 = 20,564.70 : x
  2. Step 2: Convert to fraction form
    28,535.10/39,296.79 = 20,564.70/x
  3. Step 3: Cross multiply
    28,535.10x = 39,296.79 × 20,564.70
  4. Step 4: Simplify right side
    28,535.10x = 808,126,697.31
  5. Step 5: Solve for x
    x = 808,126,697.31/28,535.10
  6. Step 6: Final answer
    x = 28,320.44

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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.