Home / 30,697.32-42,362.80-18,758.18

Finding the Fourth Proportional to 30,697.32, 42,362.80 and 18,758.18

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Solution

The fourth proportional to 30,697.32, 42,362.80 and 18,758.18 is: 25,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.32 : 42,362.80 = 18,758.18 : x
  2. Step 2: Convert to fraction form
    30,697.32/42,362.80 = 18,758.18/x
  3. Step 3: Cross multiply
    30,697.32x = 42,362.80 × 18,758.18
  4. Step 4: Simplify right side
    30,697.32x = 794,649,027.70
  5. Step 5: Solve for x
    x = 794,649,027.70/30,697.32
  6. Step 6: Final answer
    x = 25,886.59

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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.