Home / 13,532.86-20,291.05-7,987.47

Finding the Fourth Proportional to 13,532.86, 20,291.05 and 7,987.47

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Solution

The fourth proportional to 13,532.86, 20,291.05 and 7,987.47 is: 11,976.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,532.86 : 20,291.05 = 7,987.47 : x
  2. Step 2: Convert to fraction form
    13,532.86/20,291.05 = 7,987.47/x
  3. Step 3: Cross multiply
    13,532.86x = 20,291.05 × 7,987.47
  4. Step 4: Simplify right side
    13,532.86x = 162,074,153.14
  5. Step 5: Solve for x
    x = 162,074,153.14/13,532.86
  6. Step 6: Final answer
    x = 11,976.34

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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.