Home / 30,912.78-42,628.23-26,451.30

Finding the Fourth Proportional to 30,912.78, 42,628.23 and 26,451.30

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Solution

The fourth proportional to 30,912.78, 42,628.23 and 26,451.30 is: 36,475.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.78 : 42,628.23 = 26,451.30 : x
  2. Step 2: Convert to fraction form
    30,912.78/42,628.23 = 26,451.30/x
  3. Step 3: Cross multiply
    30,912.78x = 42,628.23 × 26,451.30
  4. Step 4: Simplify right side
    30,912.78x = 1,127,572,100.20
  5. Step 5: Solve for x
    x = 1,127,572,100.20/30,912.78
  6. Step 6: Final answer
    x = 36,475.92

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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.