Home / 30,685.58-42,346.17-17,256.87

Finding the Fourth Proportional to 30,685.58, 42,346.17 and 17,256.87

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Solution

The fourth proportional to 30,685.58, 42,346.17 and 17,256.87 is: 23,814.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.58 : 42,346.17 = 17,256.87 : x
  2. Step 2: Convert to fraction form
    30,685.58/42,346.17 = 17,256.87/x
  3. Step 3: Cross multiply
    30,685.58x = 42,346.17 × 17,256.87
  4. Step 4: Simplify right side
    30,685.58x = 730,762,421.25
  5. Step 5: Solve for x
    x = 730,762,421.25/30,685.58
  6. Step 6: Final answer
    x = 23,814.52

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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.