Home / 30,873.72-42,603.20-18,125.52

Finding the Fourth Proportional to 30,873.72, 42,603.20 and 18,125.52

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Solution

The fourth proportional to 30,873.72, 42,603.20 and 18,125.52 is: 25,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.72 : 42,603.20 = 18,125.52 : x
  2. Step 2: Convert to fraction form
    30,873.72/42,603.20 = 18,125.52/x
  3. Step 3: Cross multiply
    30,873.72x = 42,603.20 × 18,125.52
  4. Step 4: Simplify right side
    30,873.72x = 772,205,153.66
  5. Step 5: Solve for x
    x = 772,205,153.66/30,873.72
  6. Step 6: Final answer
    x = 25,011.73

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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.