Home / 30,970.65-42,734.44-18,234.57

Finding the Fourth Proportional to 30,970.65, 42,734.44 and 18,234.57

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Solution

The fourth proportional to 30,970.65, 42,734.44 and 18,234.57 is: 25,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.65 : 42,734.44 = 18,234.57 : x
  2. Step 2: Convert to fraction form
    30,970.65/42,734.44 = 18,234.57/x
  3. Step 3: Cross multiply
    30,970.65x = 42,734.44 × 18,234.57
  4. Step 4: Simplify right side
    30,970.65x = 779,243,977.69
  5. Step 5: Solve for x
    x = 779,243,977.69/30,970.65
  6. Step 6: Final answer
    x = 25,160.72

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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.