Home / 30,719.68-42,390.96-17,290.24

Finding the Fourth Proportional to 30,719.68, 42,390.96 and 17,290.24

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Solution

The fourth proportional to 30,719.68, 42,390.96 and 17,290.24 is: 23,859.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,719.68 : 42,390.96 = 17,290.24 : x
  2. Step 2: Convert to fraction form
    30,719.68/42,390.96 = 17,290.24/x
  3. Step 3: Cross multiply
    30,719.68x = 42,390.96 × 17,290.24
  4. Step 4: Simplify right side
    30,719.68x = 732,949,872.23
  5. Step 5: Solve for x
    x = 732,949,872.23/30,719.68
  6. Step 6: Final answer
    x = 23,859.29

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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.