Home / 13,509.04-18,642.60-7,767.36

Finding the Fourth Proportional to 13,509.04, 18,642.60 and 7,767.36

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Solution

The fourth proportional to 13,509.04, 18,642.60 and 7,767.36 is: 10,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.04 : 18,642.60 = 7,767.36 : x
  2. Step 2: Convert to fraction form
    13,509.04/18,642.60 = 7,767.36/x
  3. Step 3: Cross multiply
    13,509.04x = 18,642.60 × 7,767.36
  4. Step 4: Simplify right side
    13,509.04x = 144,803,785.54
  5. Step 5: Solve for x
    x = 144,803,785.54/13,509.04
  6. Step 6: Final answer
    x = 10,719.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.