Home / 13,386.36-20,079.86-4,501.80

Finding the Fourth Proportional to 13,386.36, 20,079.86 and 4,501.80

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Solution

The fourth proportional to 13,386.36, 20,079.86 and 4,501.80 is: 6,752.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.36 : 20,079.86 = 4,501.80 : x
  2. Step 2: Convert to fraction form
    13,386.36/20,079.86 = 4,501.80/x
  3. Step 3: Cross multiply
    13,386.36x = 20,079.86 × 4,501.80
  4. Step 4: Simplify right side
    13,386.36x = 90,395,513.75
  5. Step 5: Solve for x
    x = 90,395,513.75/13,386.36
  6. Step 6: Final answer
    x = 6,752.81

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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.