Home / 13,642.48-20,357.33-12,171.52

Finding the Fourth Proportional to 13,642.48, 20,357.33 and 12,171.52

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Solution

The fourth proportional to 13,642.48, 20,357.33 and 12,171.52 is: 18,162.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.48 : 20,357.33 = 12,171.52 : x
  2. Step 2: Convert to fraction form
    13,642.48/20,357.33 = 12,171.52/x
  3. Step 3: Cross multiply
    13,642.48x = 20,357.33 × 12,171.52
  4. Step 4: Simplify right side
    13,642.48x = 247,779,649.24
  5. Step 5: Solve for x
    x = 247,779,649.24/13,642.48
  6. Step 6: Final answer
    x = 18,162.36

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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.