Home / 30,642.02-42,286-17,213.28

Finding the Fourth Proportional to 30,642.02, 42,286 and 17,213.28

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Solution

The fourth proportional to 30,642.02, 42,286 and 17,213.28 is: 23,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,642.02 : 42,286 = 17,213.28 : x
  2. Step 2: Convert to fraction form
    30,642.02/42,286 = 17,213.28/x
  3. Step 3: Cross multiply
    30,642.02x = 42,286 × 17,213.28
  4. Step 4: Simplify right side
    30,642.02x = 727,880,758.08
  5. Step 5: Solve for x
    x = 727,880,758.08/30,642.02
  6. Step 6: Final answer
    x = 23,754.33

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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.