Home / 30,910.68-42,657.48-18,335.52

Finding the Fourth Proportional to 30,910.68, 42,657.48 and 18,335.52

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Solution

The fourth proportional to 30,910.68, 42,657.48 and 18,335.52 is: 25,303.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,910.68 : 42,657.48 = 18,335.52 : x
  2. Step 2: Convert to fraction form
    30,910.68/42,657.48 = 18,335.52/x
  3. Step 3: Cross multiply
    30,910.68x = 42,657.48 × 18,335.52
  4. Step 4: Simplify right side
    30,910.68x = 782,147,077.69
  5. Step 5: Solve for x
    x = 782,147,077.69/30,910.68
  6. Step 6: Final answer
    x = 25,303.46

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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.