Home / 30,820.28-42,533.07-17,390.75

Finding the Fourth Proportional to 30,820.28, 42,533.07 and 17,390.75

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Solution

The fourth proportional to 30,820.28, 42,533.07 and 17,390.75 is: 23,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,820.28 : 42,533.07 = 17,390.75 : x
  2. Step 2: Convert to fraction form
    30,820.28/42,533.07 = 17,390.75/x
  3. Step 3: Cross multiply
    30,820.28x = 42,533.07 × 17,390.75
  4. Step 4: Simplify right side
    30,820.28x = 739,681,945.99
  5. Step 5: Solve for x
    x = 739,681,945.99/30,820.28
  6. Step 6: Final answer
    x = 23,999.85

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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.