Home / 30,439.24-42,008.31-18,500.26

Finding the Fourth Proportional to 30,439.24, 42,008.31 and 18,500.26

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Solution

The fourth proportional to 30,439.24, 42,008.31 and 18,500.26 is: 25,531.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.24 : 42,008.31 = 18,500.26 : x
  2. Step 2: Convert to fraction form
    30,439.24/42,008.31 = 18,500.26/x
  3. Step 3: Cross multiply
    30,439.24x = 42,008.31 × 18,500.26
  4. Step 4: Simplify right side
    30,439.24x = 777,164,657.16
  5. Step 5: Solve for x
    x = 777,164,657.16/30,439.24
  6. Step 6: Final answer
    x = 25,531.67

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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.