Home / 20,953.26-31,378.48-13,535.24

Finding the Fourth Proportional to 20,953.26, 31,378.48 and 13,535.24

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Solution

The fourth proportional to 20,953.26, 31,378.48 and 13,535.24 is: 20,269.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.26 : 31,378.48 = 13,535.24 : x
  2. Step 2: Convert to fraction form
    20,953.26/31,378.48 = 13,535.24/x
  3. Step 3: Cross multiply
    20,953.26x = 31,378.48 × 13,535.24
  4. Step 4: Simplify right side
    20,953.26x = 424,715,066.90
  5. Step 5: Solve for x
    x = 424,715,066.90/20,953.26
  6. Step 6: Final answer
    x = 20,269.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.