Home / 30,980.72-42,712.20-24,628.70

Finding the Fourth Proportional to 30,980.72, 42,712.20 and 24,628.70

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Solution

The fourth proportional to 30,980.72, 42,712.20 and 24,628.70 is: 33,954.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,980.72 : 42,712.20 = 24,628.70 : x
  2. Step 2: Convert to fraction form
    30,980.72/42,712.20 = 24,628.70/x
  3. Step 3: Cross multiply
    30,980.72x = 42,712.20 × 24,628.70
  4. Step 4: Simplify right side
    30,980.72x = 1,051,945,746.58
  5. Step 5: Solve for x
    x = 1,051,945,746.58/30,980.72
  6. Step 6: Final answer
    x = 33,954.86

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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.