Home / 20,426.31-30,623.90-10,559.30

Finding the Fourth Proportional to 20,426.31, 30,623.90 and 10,559.30

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Solution

The fourth proportional to 20,426.31, 30,623.90 and 10,559.30 is: 15,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.31 : 30,623.90 = 10,559.30 : x
  2. Step 2: Convert to fraction form
    20,426.31/30,623.90 = 10,559.30/x
  3. Step 3: Cross multiply
    20,426.31x = 30,623.90 × 10,559.30
  4. Step 4: Simplify right side
    20,426.31x = 323,366,741.35
  5. Step 5: Solve for x
    x = 323,366,741.35/20,426.31
  6. Step 6: Final answer
    x = 15,830.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.