Home / 20,016.79-30,031.26-10,655.22

Finding the Fourth Proportional to 20,016.79, 30,031.26 and 10,655.22

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Solution

The fourth proportional to 20,016.79, 30,031.26 and 10,655.22 is: 15,986.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,016.79 : 30,031.26 = 10,655.22 : x
  2. Step 2: Convert to fraction form
    20,016.79/30,031.26 = 10,655.22/x
  3. Step 3: Cross multiply
    20,016.79x = 30,031.26 × 10,655.22
  4. Step 4: Simplify right side
    20,016.79x = 319,989,682.18
  5. Step 5: Solve for x
    x = 319,989,682.18/20,016.79
  6. Step 6: Final answer
    x = 15,986.06

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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.