Home / 36,029.81-49,721.04-20,931.21

Finding the Fourth Proportional to 36,029.81, 49,721.04 and 20,931.21

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Solution

The fourth proportional to 36,029.81, 49,721.04 and 20,931.21 is: 28,885.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,029.81 : 49,721.04 = 20,931.21 : x
  2. Step 2: Convert to fraction form
    36,029.81/49,721.04 = 20,931.21/x
  3. Step 3: Cross multiply
    36,029.81x = 49,721.04 × 20,931.21
  4. Step 4: Simplify right side
    36,029.81x = 1,040,721,529.66
  5. Step 5: Solve for x
    x = 1,040,721,529.66/36,029.81
  6. Step 6: Final answer
    x = 28,885.01

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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.