Home / 30,642.24-42,285.14-18,725.52

Finding the Fourth Proportional to 30,642.24, 42,285.14 and 18,725.52

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Solution

The fourth proportional to 30,642.24, 42,285.14 and 18,725.52 is: 25,840.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,642.24 : 42,285.14 = 18,725.52 : x
  2. Step 2: Convert to fraction form
    30,642.24/42,285.14 = 18,725.52/x
  3. Step 3: Cross multiply
    30,642.24x = 42,285.14 × 18,725.52
  4. Step 4: Simplify right side
    30,642.24x = 791,811,234.77
  5. Step 5: Solve for x
    x = 791,811,234.77/30,642.24
  6. Step 6: Final answer
    x = 25,840.51

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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.