Home / 30,719.52-42,392.16-17,290.56

Finding the Fourth Proportional to 30,719.52, 42,392.16 and 17,290.56

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Solution

The fourth proportional to 30,719.52, 42,392.16 and 17,290.56 is: 23,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,719.52 : 42,392.16 = 17,290.56 : x
  2. Step 2: Convert to fraction form
    30,719.52/42,392.16 = 17,290.56/x
  3. Step 3: Cross multiply
    30,719.52x = 42,392.16 × 17,290.56
  4. Step 4: Simplify right side
    30,719.52x = 732,984,186.01
  5. Step 5: Solve for x
    x = 732,984,186.01/30,719.52
  6. Step 6: Final answer
    x = 23,860.54

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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.