Home / 20,031.81-30,041.47-6,881.05

Finding the Fourth Proportional to 20,031.81, 30,041.47 and 6,881.05

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Solution

The fourth proportional to 20,031.81, 30,041.47 and 6,881.05 is: 10,319.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.81 : 30,041.47 = 6,881.05 : x
  2. Step 2: Convert to fraction form
    20,031.81/30,041.47 = 6,881.05/x
  3. Step 3: Cross multiply
    20,031.81x = 30,041.47 × 6,881.05
  4. Step 4: Simplify right side
    20,031.81x = 206,716,857.14
  5. Step 5: Solve for x
    x = 206,716,857.14/20,031.81
  6. Step 6: Final answer
    x = 10,319.43

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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.