Home / 13,389.36-20,085.12-4,155.36

Finding the Fourth Proportional to 13,389.36, 20,085.12 and 4,155.36

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Solution

The fourth proportional to 13,389.36, 20,085.12 and 4,155.36 is: 6,233.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.36 : 20,085.12 = 4,155.36 : x
  2. Step 2: Convert to fraction form
    13,389.36/20,085.12 = 4,155.36/x
  3. Step 3: Cross multiply
    13,389.36x = 20,085.12 × 4,155.36
  4. Step 4: Simplify right side
    13,389.36x = 83,460,904.24
  5. Step 5: Solve for x
    x = 83,460,904.24/13,389.36
  6. Step 6: Final answer
    x = 6,233.38

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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.