Home / 13,030.90-17,979.51-7,727.02

Finding the Fourth Proportional to 13,030.90, 17,979.51 and 7,727.02

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Solution

The fourth proportional to 13,030.90, 17,979.51 and 7,727.02 is: 10,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,030.90 : 17,979.51 = 7,727.02 : x
  2. Step 2: Convert to fraction form
    13,030.90/17,979.51 = 7,727.02/x
  3. Step 3: Cross multiply
    13,030.90x = 17,979.51 × 7,727.02
  4. Step 4: Simplify right side
    13,030.90x = 138,928,033.36
  5. Step 5: Solve for x
    x = 138,928,033.36/13,030.90
  6. Step 6: Final answer
    x = 10,661.43

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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.