Home / 30,681.91-42,343.64-17,254.43

Finding the Fourth Proportional to 30,681.91, 42,343.64 and 17,254.43

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Solution

The fourth proportional to 30,681.91, 42,343.64 and 17,254.43 is: 23,812.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681.91 : 42,343.64 = 17,254.43 : x
  2. Step 2: Convert to fraction form
    30,681.91/42,343.64 = 17,254.43/x
  3. Step 3: Cross multiply
    30,681.91x = 42,343.64 × 17,254.43
  4. Step 4: Simplify right side
    30,681.91x = 730,615,372.33
  5. Step 5: Solve for x
    x = 730,615,372.33/30,681.91
  6. Step 6: Final answer
    x = 23,812.58

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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.