Home / 30,801.24-42,505.56-18,697.50

Finding the Fourth Proportional to 30,801.24, 42,505.56 and 18,697.50

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Solution

The fourth proportional to 30,801.24, 42,505.56 and 18,697.50 is: 25,802.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,801.24 : 42,505.56 = 18,697.50 : x
  2. Step 2: Convert to fraction form
    30,801.24/42,505.56 = 18,697.50/x
  3. Step 3: Cross multiply
    30,801.24x = 42,505.56 × 18,697.50
  4. Step 4: Simplify right side
    30,801.24x = 794,747,708.10
  5. Step 5: Solve for x
    x = 794,747,708.10/30,801.24
  6. Step 6: Final answer
    x = 25,802.46

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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.