Home / 20,735.24-31,082.70-10,315.40

Finding the Fourth Proportional to 20,735.24, 31,082.70 and 10,315.40

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Solution

The fourth proportional to 20,735.24, 31,082.70 and 10,315.40 is: 15,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.24 : 31,082.70 = 10,315.40 : x
  2. Step 2: Convert to fraction form
    20,735.24/31,082.70 = 10,315.40/x
  3. Step 3: Cross multiply
    20,735.24x = 31,082.70 × 10,315.40
  4. Step 4: Simplify right side
    20,735.24x = 320,630,483.58
  5. Step 5: Solve for x
    x = 320,630,483.58/20,735.24
  6. Step 6: Final answer
    x = 15,463.07

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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.