Home / 13,715.21-20,452.38-13,590.47

Finding the Fourth Proportional to 13,715.21, 20,452.38 and 13,590.47

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Solution

The fourth proportional to 13,715.21, 20,452.38 and 13,590.47 is: 20,266.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.21 : 20,452.38 = 13,590.47 : x
  2. Step 2: Convert to fraction form
    13,715.21/20,452.38 = 13,590.47/x
  3. Step 3: Cross multiply
    13,715.21x = 20,452.38 × 13,590.47
  4. Step 4: Simplify right side
    13,715.21x = 277,957,303.59
  5. Step 5: Solve for x
    x = 277,957,303.59/13,715.21
  6. Step 6: Final answer
    x = 20,266.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.