Home / 13,315.36-19,969.60-3,953.16

Finding the Fourth Proportional to 13,315.36, 19,969.60 and 3,953.16

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Solution

The fourth proportional to 13,315.36, 19,969.60 and 3,953.16 is: 5,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.36 : 19,969.60 = 3,953.16 : x
  2. Step 2: Convert to fraction form
    13,315.36/19,969.60 = 3,953.16/x
  3. Step 3: Cross multiply
    13,315.36x = 19,969.60 × 3,953.16
  4. Step 4: Simplify right side
    13,315.36x = 78,943,023.94
  5. Step 5: Solve for x
    x = 78,943,023.94/13,315.36
  6. Step 6: Final answer
    x = 5,928.72

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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.