Home / 21,931.53-30,229.96-17,143.01

Finding the Fourth Proportional to 21,931.53, 30,229.96 and 17,143.01

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Solution

The fourth proportional to 21,931.53, 30,229.96 and 17,143.01 is: 23,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.53 : 30,229.96 = 17,143.01 : x
  2. Step 2: Convert to fraction form
    21,931.53/30,229.96 = 17,143.01/x
  3. Step 3: Cross multiply
    21,931.53x = 30,229.96 × 17,143.01
  4. Step 4: Simplify right side
    21,931.53x = 518,232,458.08
  5. Step 5: Solve for x
    x = 518,232,458.08/21,931.53
  6. Step 6: Final answer
    x = 23,629.57

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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.