Home / 20,426.30-30,623.91-10,559.28

Finding the Fourth Proportional to 20,426.30, 30,623.91 and 10,559.28

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Solution

The fourth proportional to 20,426.30, 30,623.91 and 10,559.28 is: 15,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.30 : 30,623.91 = 10,559.28 : x
  2. Step 2: Convert to fraction form
    20,426.30/30,623.91 = 10,559.28/x
  3. Step 3: Cross multiply
    20,426.30x = 30,623.91 × 10,559.28
  4. Step 4: Simplify right side
    20,426.30x = 323,366,515.63
  5. Step 5: Solve for x
    x = 323,366,515.63/20,426.30
  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.