Home / 30,628.76-42,272.23-18,699.02

Finding the Fourth Proportional to 30,628.76, 42,272.23 and 18,699.02

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Solution

The fourth proportional to 30,628.76, 42,272.23 and 18,699.02 is: 25,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.76 : 42,272.23 = 18,699.02 : x
  2. Step 2: Convert to fraction form
    30,628.76/42,272.23 = 18,699.02/x
  3. Step 3: Cross multiply
    30,628.76x = 42,272.23 × 18,699.02
  4. Step 4: Simplify right side
    30,628.76x = 790,449,062.85
  5. Step 5: Solve for x
    x = 790,449,062.85/30,628.76
  6. Step 6: Final answer
    x = 25,807.41

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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.