Home / 13,031.04-17,980.05-7,727.58

Finding the Fourth Proportional to 13,031.04, 17,980.05 and 7,727.58

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Solution

The fourth proportional to 13,031.04, 17,980.05 and 7,727.58 is: 10,662.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.04 : 17,980.05 = 7,727.58 : x
  2. Step 2: Convert to fraction form
    13,031.04/17,980.05 = 7,727.58/x
  3. Step 3: Cross multiply
    13,031.04x = 17,980.05 × 7,727.58
  4. Step 4: Simplify right side
    13,031.04x = 138,942,274.78
  5. Step 5: Solve for x
    x = 138,942,274.78/13,031.04
  6. Step 6: Final answer
    x = 10,662.41

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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.