Home / 21,931.57-32,820.81-17,936.65

Finding the Fourth Proportional to 21,931.57, 32,820.81 and 17,936.65

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Solution

The fourth proportional to 21,931.57, 32,820.81 and 17,936.65 is: 26,842.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.57 : 32,820.81 = 17,936.65 : x
  2. Step 2: Convert to fraction form
    21,931.57/32,820.81 = 17,936.65/x
  3. Step 3: Cross multiply
    21,931.57x = 32,820.81 × 17,936.65
  4. Step 4: Simplify right side
    21,931.57x = 588,695,381.69
  5. Step 5: Solve for x
    x = 588,695,381.69/21,931.57
  6. Step 6: Final answer
    x = 26,842.37

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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.